THE UNIVERSITY OF MICHIGAN COLLEGE OF ENGINEERING Department of Chemical and Metallurgical Engineering Interim Summary Report SCREENING PROGRAM ON SUPERALLOYS FOR TRISONIC TRANSPORT John P. Rowe James W. Freeman ORA Project 04368 prepared for: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Grant NsG-124-61 Washington 25, D. C. administered through: OFFICE OF RESEARCH ADMINISTRATION ANN ARBOR October 31, 1961

SCREENING PROGRAM ON SUPERALLOYS FOR TRISONIC TRANSPORT INTRODUCTION This report is provided as an interim summary of the evaluation of superalloys in sheet form being conducted at Michigan as part of the Screening Program for Materials for the Trisonic Transport. These data represent the results of the program being used cooperatively by several laboratories for preliminary survey of the candidate materials. This screening program includes the following tests for all materials, using samples from both the longitudinal and transverse direction of the sheet: 1) Tensile tests using both unnotched samples and samples with sharp-edge notches at each of the following temperatures: a) -110~F b) 75~F c) 350~F d) 650~F e) 800 ~F 2) Tensile tests at 75~ and 650~F after exposure in air for 1000 hours at 650OF under 40, 000 psi. Exposure is made using unnotched and notched samples from both the longitudinal and transverse direction of the sheet. The unnotched samples in most cases had a reduced section 0. 5-inch wide by 2. 0-inches long. The only exception to this was required by the narrow sheet obtained for AM350 alloy. This material required that the transverse unnotched samples be made with a reduced section 0. 375-inch

2 wide by 1. 75-inches long. The ASTM sharp-edge notch sample was used for all notched testing. The screening program on superalloys is intended to determine the upper temperature limit of usefulness for the most promising alloys. Accordingly, as the preliminary screening above is completed, some materials are to be subjected to further study. This will involve both tensile testing at higher temperatures and an increase in the exposure temperature, still using an exposure for 1000 hours under 40, 000 psi. The data obtained from the test program include the following: ^) Ultimate tensile strength, 0. 2-percent offset yield strength, and elongation from unnotched samples 2) Net section tensile strength for samples with sharp-edge notches 3) The ratio of the tensile strength with a notched sample to the tensile strength of an unnotched sample (hereafter referred to as "notched tensile strength ratio", or "N/S ratio").

3 EXPERIMENTAL MATERIALS The experimental program to date has included work on the following materials in the form of 0. 025-inch sheet: 1) Rene' 41, annealed (Heat R217) 2) Rene' 41, cold worked 20 percent and 35 percent (Heat R-216) 3) N155, cold worked 40 percent and 65 percent (Heat M-5623) 4) A286, cold worked 30 percent and 80 percent (Heat ) 5) L605, cold worked 25 percent and 45 percent (Heat L1842) 6) D979, cold worked 30 percent and 50 percent (Heat W23211) 7) AM350 CRT air melted (Heat 89746) In addition to the above alloys, Waspaloy is to be included in the program. The heat numbers and reported chemical compositions of the first six materials listed are included in Table I. Composition has not been reported for the AM350. The Rene' 41 alloy was obtained from the General Electric Company Metallurgical Products Department. All three conditions of the alloy were produced on a hand mill providing sheet 36-inches wide. Items (3) - (6) above were obtained through the NASA Lewis Research Center from the Wallingford Steel Company. These were produced on a strip mill as 12-inch wide strip. AM350 alloy was included in the program to serve as a base-line material for comparison of data among the cooperating laboratories. It was provided by the Allegheny Ludlum Research Laboratory as 6. 5-inch wide strip from a small hand mill. The N155 and L605 were tested in the as-rolled condition. Various aging treatments were studied for the cold worked Rene' 41, A286, and D979 alloys. These materials were then subjected to the screening program

4 using the aging treatment deemed optimum on the basis of preliminary testing. The annealed Rene' 41 was given the standard age for the alloy. The AM350 was tempered for 3 hours at 850~F. The heat treatments used are given in the respective tables for each alloy.

5 RESULTS The relative properties of the materials before exposure are presented, followed by a detailed presentation of the properties of each material as a function of test temperature. The effects of exposure for 1000 hours under 40, 000 psi at 650~F are then discussed for those materials on which exposures have been completed. Finally, the effects of exposure at 800~ and 1000~F on Rene' 41 alloy are given, and proposed exposures for other materials are discussed. Properties Before Exposure The notched tensile strength ratio as a function of the ultimate tensile strength and yield strength at 75~, 650~, and 800~F are given by figures 1 and 2 using the available data for all materials. Since there is some variation in density among the materials and because the ratio of tensile strength to density has general utility, the relation of the N/S ratio to this parameter is shown by figure 3. As will be discussed in detail later, exposure generally did not change the properties significantly. Therefore, the correlations of figures 1 through 3 provide an adequate presentation of the relative strengths of the several alloys. These figures indicate the following: 1) Marked increases in strength were obtained by cold working the alloys. This was true both for the alloys which were tested in the asrolled condition, as well as for the Ti + Al bearing alloys which were aged to enhance the properties after cold working. 2) The increase in strength from cold working was generally accompanied by a reduced N/S ratio. An exception to this generality was present in the Rene' 41 data at all three testing temperatures, and in the N155 data from longitudinal samples tested at 650 ~F.

6 3) For a given strength level, there is a considerable spread among the N/S ratios for the various alloys; or, vice versa, a considerable variation exists among the strength values at a given value of N/S ratio. 4) The relation between N/S ratio and strength was generally the same for both the longitudinal and transverse directions in the sheets except for N155 alloy cold reduced 65 percent in which the transverse direction had a lower N/S ratio than the longitudinal direction at 750 and 650~F. At 800~F, both of the conditions of N155 had transverse N/S ratios lower than the longitudinal ratios. The study of the general trends and relative properties of the various materials at a given temperature should be accompanied by a more detailed consideration of the properties of each individual alloy as a function of test temperature. The data for each alloy (tables II through VII) are presented graphically in figures 4 through 15o The data presently available indicate the following: 1) Both the strength and N/S ratio decreased with increasing test temperature. In all cases where tests were conducted, both values were either higher in tests at -110~F or nearly the same as tests at 75 F. The values at room temperature were higher than those at 650~ or 800 Fo 2) Except when large cold reductions were introduced, there was relatively little difference between longitudinal and transverse specimens. 3) Elongations generally decreased with increasing test temperature if there was any appreciable change. 4) Cold reductions increased strength and reduced ductility. This was true for the as-cold rolled materials and for the nickel-base Ti+ Al bearing alloys which were aged after cold work. The increase in strength was accompanied by a decrease in N/S ratio, as previously discussed.

7 Properties After Exposure at 650~F Although the exposure testing is not complete for all materials, some data are available for all alloys except AM350. These data (tables II - VI and figs. 4 through 11, and 13) indicate the following: 1) Exposure for 1000 hours at 650~F under 40, 000 psi did not significantly decrease strength at room temperature or at 650 F in any case. The data for Rene' 41 alloy at -110 F after exposure indicated no changes in strength. 2) Two of the alloys, N155 and L605, showed fairly large increases in strength (figs. 7 through 10) as a result of exposure at 650~F. Both ultimate and yield strengths were increased with the extent of the increase being much greater in tests at room temperature than at 6500F. Also, the increases were greater for the heavier cold worked material (figs. 8 and 10) than for the material with the lower amount of cold work (figs. 7 and 9). 3) The N/S ratio generally remained unaffected by exposure at 650~F. Most cases in which changes occurred indicated an increase in N/S ratio. N155 and L605 alloys, for which the strength increased with exposure, showed some decrease in N/S ratio. Comparison of these data with the trends given in figures 1 and 2, however, shows that the decrease in N/S ratio was actually less for the strength change involved than would be indicated by the curves. 4) Exposure at 650~F had little effect on elongation except for Renei 41 alloy which showed some decrease in elongation from the exposuAEre C Properties After Exposure at Temperatures above 650~F To date, only Rene& 41 alloy annealed and aged has been evaluated after exposure at higher temperatures than 650 ~F. Exposures have been

8 made with Rene' 41 for 1000 hours under 40, 000 psi at 800~ and 1000~F with subsequent tensile tests at 75 F and at the exposure temperature. As was the case for this alloy after exposure at 650~F, these higher temperature exposures had little effect on strength or N/S ratio (table II and fig. 4). Exposure at 1000~F may have slightly reduced the N/S ratio at 1000~F. Exposure at 8000 and 1000~F did not reduce ductility as much as the exposure at 650~F. On the basis of the relations between strength and N/S ratio (figs. 1 through 3), the decision has been made to extend the screening program to higher exposure temperatures as follows: 1) Rene' 41 annealed and aged - screen at 1200~F; 2) A286 cold reduced 30 percent and aged - screen at 1000~F 3) L605 cold reduced 25 percent - screen at 1000~F 4) Either Rene' 41 cold reduced 35 percent and aged, or D979 cold reduced 50 percent and aged pending results of tests presently in progress - screen at 1000~F,

9 DISCUSSION No attempt has been made to draw conclusions from the data for two reasons. Firstly, there has not yet been a clear delineation of the proper way to interpret the data. Required levels of strength or N/S ratio have not been established. Secondly, there are many other factors, such as fabricability, availability, cost, elastic modulus, and thermal expansion which should also be considered in the final selection of materials when a basis for evaluation of the screening test data is established. A considerable amount of exposure testing at 650~F is still in progress, This will be completed. The decision has been made, however, to limit all testing after exposure to room temperature and the exposure temperature. No tests will be made at -110~F after exposure. In addition, the program has further been limited by omitting tests at 350 ~F on unexposed m ate rial. In a few cases, the influence of heat treatment is receiving further study. If promising combinations of properties are obtained, they will be added to the screening program. Waspaloy will be tested when the material becomes available.

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11 TABLE II TENSILE TEST RESULTS RENE' 41 ALLOY (Density - 0. 298 lb/in3 ) Tensile Properties( (a) Unnotched Notched Cold Exposure Test Ultimate Ultimate Yield Tensile Reduction Aging Temp Temp (b) Strength Density Strength Elong. Strength Notch (percent) Treatment (~F) (~F) Direction (1000 psi) (1000 in. ) (1000 psi) (%) (1000 psi) Ratio 0 16hr-1400~F None -110 L 222 745 162 25 186.84 650 -110 L 217 729 166 17 183.84 None -110 T 219 735 159 27 179.82 650 -110 T 203 682 164 10 178.88 None 75 L 204 685 154 22 172.84 650 75 L 196 658 155 16 170.88 800 75 L 186 624 156 11 169.91 1000 75 L 203 682 157 24 166.82 None 75 T 204 685 154 23 171.83 650 75 T 195 655 152 13 162.83 800 75 T 201 675 154 25 169.84 1000 75 T 201 675 --- 19 159.79 None 350 L 196 658 145 27 158.81 None 350 T 193 648 141 25 151.78 None 650 L 184 618 145 25 154.84 650 650 L 183 614 142 19 156.85 None 650 T 191 641 147 21 157.82 650 650 T 180 604 143 14 148.82 None 800 L 179 601 139 26 156.87 800 800 L 174 584 134 18 145.83 None 800 T 182 611 143 25 150.82 800 800 T 175 588 132 24 134.76 None 1000 L 175 588 133 24 148.85 1000 1000 L 179 601 145 16 121.68 None 1000 T 178 598 138 20 145.81 1000 1000 T 176 591 136 19 131.74 20 16hr-1400~F None -110 L 247 830 214 14 221.90 None -110 T 244 819 209 14 190.78 None 75 L 229 769 208 10 205.89 650 75 L 230 772 205 12 196.85 None 75 T 225 755 200 10 181.80 None 650 L 215 722 190 11 160.74 650 650 L 213 715 189 11 160.75 None 650 T 209 702 188 12 132.63 650 650 T 208 698 185 11 166.80 None 800 L 213 715 192 13 126.59 35 2hr-1500~F None 75 L 249 836 230 8 196.79 650 75 L 246 826 230 9 --- - None 75 T 237 795 216 7 182.77 None 650 L 229 769 210 7 138.60 650 650 L 229 769 213 6 160.70 None 650 T 222 745 200 8 155.70 650 650 T 221 742 200 7 158.72 None 800 L 221 742 210 6 142.64 None 800 T 217 729 196 6 142.63 a) Exposure for 1000 hours under 40, 000 psi at the indicated temperature b) L - Longitudinal; T - Transverse c) "Ultimate/Density" - ratio of ultimate strength to density; "Yield Strength" - 0.2-percent offset yield; "Elong." - elongation in 2 inches; "Notched Tensile Strength" - tensile strength of sample with sharp edge notches; "Notch Ratio" - ratio of Notched Tensile Strength to Ultimate Strength.

12 TABLE III TENSILE TEST RESULTS N155 ALLOY (Density - 0. 298 lb/in3 ) Tensile Properties(c) (a) Unnotched Notched Cold Exposure Test Ultimate Ultimate Yield Tensile Reduction Aging Temp Temp (b) Strength Density Strength Elong. Strength Notch (percent) Treatment (~F) (~F) Direction (1000 psi) (1000 in. ) (1000 psi) (%) (1000 psi) Ratio 40 None None -110 L 216 725 180 12 213.99 None -110 T 222 745 185 10 194.87 None 75 L 188 631 167 7 183.97 650 75 L 205 688 189 4.5 196.96 None 75 T 190 638 159 8 168.88 650 75 T 210 705 183 6 164.78 None 350 L 173 581 150 2.5 160.92 None 350 T 178 598 158 3.5 118.66 None 650 L 168 564 151 1.5 110.65 650 650 L 170 571 155 2.0 131.77 None 650 T 175 588 154 2.5 114.65 650 650 T 179 601 158 2.5 102.57 None 800 L 166 557 150 2.5 127.76 None 800 T 173 581 147 2.0 97.56 65 None None -110 L 247 830 210 6.0 212.86 None -110 T 264 886 227 7.5 164.62 None 75 L 217 729 185 4.0 186.86 650 75 L 244 819 224 2.0 180.74 None 75 T 232 779 187 5.0 115.50 650 75 T 259 870 227 2.5 122.47 None 350 L 201 675 165 2.5 154.77 None 350 T 215 722 177 3.0 107.50 None 650 L 198 665 176 2.0 144.73 650 650 L 207 695 188 2.0 118.59 None 650 T 213 715 186 2.0 88.41 650 650 T 221 742 199 2.0 91.41 None 800 L 201 675 174 1.5 118.59 None 800 T 213 715 185 1.5 69.32 a) Exposure for 1000 hours under 40, 000 psi at tne indicated temperature b) L - Longitudinal; T - Transverse c) "Ultimate/Density" - ratio of ultimate strength to density; "Yield Strength" - 0. 2-percent offset yield; "Elong." - elongation in 2 inches; "Notched Tensile Strength" - tensile strength of sample with sharp edge notches; "Notch Ratio"'- ratio of Notched Tensile Strength to Ultimate Strength.

13 TABLE IV TENSILE TEST RESULTS L605 ALLOY (Density - 0. 332 lb/in3) (c) Tensile Properties (a) Unnotched Notched Cold Exposure Test Ultimate Ultimate Yi eld Tensile Reduction Aging Temp Temp (b) Strength Density Strength Elong. Strength Notch (percent) Treatment (~F) (~F) Direction (1000 psi) (1000 in. ) (1000 psi) (%) (1000 psi) Ratio 25 None None -110 L 234 705 154 15 197.84 None -110 T 240 723 187 10 197.82 None 75 L 208 626 154 12 176.85 650 75 L 215 648 172 9 200.93 None 75 T 213 642 163 9 174.82 650 75 T 230 693 197 9 209.91 None 350 L 194 584 133 16 153.79 None 350 T 197 594 150 9 152.77 None 650 L 186 560 143 15 164.88 650 650 L 188 566 147 8 155.82 None 650 T 192 578 158 8 142.74 650 650 T 197 594 167 6 155.79 None 800 L 184 554 140 7 143.78 None 800 T 196 591 162 5 130.66 45 None None -110 L 291 877 211 3.0 157.54 None -110 T 305 919 230 4.5 140.46 None 75 L 264 795 182 2.5 146.55. 650 75 L 290 874 247 2.0 156.54 None 75 T 276 831 192 4.0 137.50 650 75 T 302 910 258 3.0 127.42 None 350 L 250 753 182 2.5 128.51 None 350 T 263 792 202 4.0 124.47 None 650 L 251 756 193 2.0 118.47 650 650 L 257 774 214 2.3 154.60 None 650 T 262 789 208 2.5 130.50 650 650 T 264 795 213 2.8 97.37 None 800 L 249 750 203 2.0 144.58 None 800 T 260 783 221 2.0 107.41 a) Exposure for 1000 hours under 40, 000 psi at the indicated temperature b) L - Longitudinal; T - Transverse c) "Ultimate/Density" - ratio of ultimate strength to density; "Yield Strength" - 0. 2-percent offset yield; "Elong." - elongation in 2 inches; "Notched Tensile Strength" - tensile strength of sample with sharp edge notches; "Notch Ratio" - ratio of Notched Tensile Strength to Ultimate Strength.

14 TABLE V TENSILE TEST RESULTS D979 ALLOY (Density - 0. 296 lb/in3) Tensile Properties(c) (a) Unnotched Notched Cold Exposure Test Ultimate Ultimate Yield Tensile Reduction Aging Temp Temp (b) Strength Density Strength Elong. Strength Notch (percent) Treatment (~F) (~F) Direction (1000 psi) (1000 in. ) (1000 psi) (%) (1000 psi) Ratio 30 16hr-1200~F None 75 L 222 750 198 7.0 211.95 None 75 T 216 730 182 8.0 197.91 None 350 L 212 716 196 4.5 182.86 None 650 L 211 714 198 3.0 164.78 650 650 L 202 683 190 4.3 190.94 None 650 T 195 659 174 5.0 146.75 650 650 T 194 656 168 4.5 151.78 None 800 L 199 673 188 3.5 144.72 None 800 T 192 649 168 4.5 150.78 50 16hr-1100~F None 75 L 273 923 257 1.8 178.65 None 75 T 262 886 238 3.8 190.72 None 650 L 244 825 239 1.5 143.61 None 650 T 237 801 213 2.5 123.52 a) Exposure for 1000 hours under 40, 000 psi at the indicated temperature b) L - Longitudinal; T - Transverse c) "Ultimate/Density" - ratio of ultimate strength to density; "Yield Strength" - 0. 2-percent offset yield; "Elong." - elongation in 2 inches; "Notched Tensile Strength" - tensile strength of sample with sharp edge notches; "Notch Ratio" - ratio of Notched Tensile Strength to Ultimate Strength. TABLE VI TENSILE TEST RESULTS A286 ALLOY (Density - 0. 288 lb/in3) Tensile Properties(c) (a) Unnotched Notched Cold Exposure Test Ultimate Ultimate Yield Tensile Reduction Aging Temp Temp (b) Strength Density Strength Elong. Strength Notch (percent) Treatment (~F) (~F) Direction (1000 psi) (1000 in. ) (1000 psi) (%) (1000 psi) Ratio 30 16hr-1300~F None -110 L 202 701 169 14 189.94 None 75 L 185 642 163 11 180.97 None 75 T 181 628 154 10 180.99 650 75 T 182 632 157 11 174.95 None 650 L 166 576 151 6 123.74 650 650 L 167 580 158 6 143.86 None 650 T 167 580 147 6 121.72 650 650 T 166 576 151 7 123.74 None 800 L 162 563 145 5 116.71 None 800 T 163 566 146 5 115.71 80 16hr-1100~F None 75 L 239 830 230 2.8 143.60 None 75 T 263 913 250 3.8 140.53 None 650 T 230 798 216 2.5 83.36 a) Exposure for 1000 hours under 40, 000 psi at the indicated temperature b) L - Longitudinal; T - Transverse c) "Ultimate/Density" - ratio of ultimate strength to density; "Yield Strength" - 0.2-percent offset yield; "Elong." - elongation in 2 inches; "Notched Tensile Strength" - tensile strength of sample with sharp edge notches; "Notch Ratio" - ratio of Notched Tensile Strength to Ultimate Strength.

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16 Alloy Rene' 41 A286 N155 L605 D979 AM350 Longitudinal O A V 0 O Transverse 0 A * v * 0 (Higher strength for a given alloy resulted from higher cold work) 1. 1 00 e.1.1- 9 --- ---- * 1.0 --- --- I 0.975F | 0.81 5 2 2 0.7 0.6 -cl 0.5 z 0.4 — 150 200 250 300 Ultimate Strength, 1000 psi 1.0 -.. —0 ~-4 Ij 0 0.9 0.8 -650 ~F $4 0. 7 -_ _- - - ~0 0.6 0.5 0.8 150 200 250 300 Ultimate Strength, 1000 psi O 0.7 -800F~ 0.6 10 o0__ 5__0___0 ___ 3 U ue t l s Ultimate S trength, 1000 psi 800~F. C)

17 Alloy Rene' 41 A286 N155 L605 D979 AM350 Longitudinal O A o < O 0 Transverse ~ A * v (Higher strength for a given alloy resulted from higher cold work) 1.1 00. o 0. 9 - -__ 75 ~F 0. 0.7 u 0.5. - __, 0 0.4 120 150 180 210 240 270 0. 2% Offset Yield Strength o o0.9 - __ _ __75, 650~, and F_ o 0.8 -- --- -- -- 0. 7 0.5 0.3..6... 120 150 180 210 240 270 0. 2% Offset Yield Strength o 0.9 0. 8 0.7 800~F 0.6'a.. 0., - - I ^ 0.5 -4....1:; 0. 3 120 150 180 210 240 270 0. 2% Offset Yield Strength Figure 2. Ratio of sharp notch strength to tensile strength as a function of the 0.2 percent offset yield strength for the indicated materials at 75~, 650~, and 800~F

18 Alloy Rene' 41 A286 N155 L605 D979 AM350 Longitudinal 0O A v O Transverse * * Y 4 (Higher strength for a given alloy resulted from higher cold work) 1.1 1 0 1.0 0 M 0. 9 -75~F o 0.8 0 ~7 - - -- - 0.7 < ". \1,. o0.5 0.4 - 400 600 800 1000 Tensile Strength - Density Ratio 1.0_______________ 0 Tensile Strength - Density Ratio 5 0.9.0. o 0.8! D U 0.6 0.3 Tensile Strength Density Ratio 0.o.7 ~, ad 680~F — 0. 6 H 0.5 - 2 0.4 0 400 600 800 1000 Tensile Strength - Density Ratio 650~, and 800~F. 650~, and 800~0F.

19 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F 800~F 1000~F Longitudinal O * O Transverse A A A^ 230 - 0 220 C') By 210 -a200 A ----- On A 0 190 ----- --- 180 ------ 4-A 6f 170 160 150 0 9.9.8.....- _ A_ 0 A ^ l.7 0 0.5. — -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 4. Tensile properties as a function of test temperature for Rene' 41 alloy annealed and aged 16 hours at 1400~F. Material was tested both as-heat treated and after creep exposure.

20 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F 800~F 1000~F Longitudinal 0 ~ ) Transverse A 180 -- 170 - Ch o O 160 -- ^ 150 t 140 ^ 130 30 d 20~~~~0 15 —-- - - on (b) 0. -percent offset yield strength and elongation Figure 4 (Concluded). Tensile properties as a function of test temperature for Rene' 41 alloy annealed and aged 16 hours at 1400 F. Material was tested both as-heat treated and after creep exposure.

21 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 0 Transverse ^ 250 0 240 230 0 - o 220 o 210,) A; 200 a) 190 180 170 —, - 1. O 0.-4 0.9 -8 —Pc;~ ~~~~~~~~~CD o 0.7 --- --- --------- _-_- -- - _ —----- --- ____ _ 0.7 ) 0.6 oH o 0.5 - Z -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 5. Tensile properties as a function of test temperature for Rene' 41 alloy cold reduced 20 percent and aged 16 hours at 1400~F. Material was tested both as-heat treated and after creep exposure.

22 As Heat Exposed 1000 hrs under 40, 000 psi Treated 6500~F Longitudinal O Transverse A A 220 0 210 200 190 o 0 180 170 c 160 ------ - _ — - I- - I- - 1 0-l 160 -r-i ^N 150 d 140 — - 4 6 25 20 --------------— __ — en o d15 - - l..... — -- 0.1-4 a0 0 -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 5 (Concluded). Tensile properties as a function of test temperature for Rene' 41 alloy cold reduced 20 percent and aged 16 hours at 1400 ~F. Material was tested both as-heat treated and after creep exposure.

23 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 o Transverse A A 260 250 -- ) 240 *S o A 210 i-z 2180 - 0.9 r4J 0. 8 Rene 41 alloy cold reduced 35 percent and aged 2 hours at 1500 —F. 0 l w t b a- t t a a c. o Z 0.9 -- -- ----- ---- -200 0 200 400 600 800 1000 (a) Ultimate tensile strength and notch tensile strength ratio Figure 6. Tensile properties as a function of test temperature for Rene' 41 alloy cold reduced 35 percent and aged 2 hours at 1500~F. Material was tested both as-heat treated and after creep exposure.

24 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 Transverse Z30 220-A — A 210 --— __ _- -_.. __A 210 Mc 200 o 0 4-4'90:'i - 180 0 (-4I C. r-i 160 -- - - - - - - - 10 25 0) h 15. - w te h0 f- 10 c... A, ___-___.. -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. Z-percent offset yield strength and elongation Figure 6 (Concluded). Tensile properties as a function of test temperature for Rene' 41 alloy cold reduced 35 percent and aged Z hours at 1500 ~F. Material was tested both as-heat treated and after creep exposure.

25 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal O Transverse A A 230 220 -- 0 190 Ol90 A 0 190 L -- — L-1A —- - - -- 7 0__ 0 _._ T 180 -0 A. 170 160 150 a - 1.0 n - - afe ce xo. O i A 0.9 -- -__ 0.8 4-,-' 0.6 ^ A o 0. 5 -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 7. Tensile properties as a function of test temperature for N155 alloy cold reduced 40 percent. Material was tested both asrolled and after creep exposure.

26 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 ~ Transverse ^ 200 -- I -- - 190 180 O o 170 ai) i 160 - - - -A- t1 150 a) 140 130 120 _ 25 - - 20 -- - 1 _) U p, 15 o 0 * 10 -0 - --- - - - --- - -- -- 0 i io r. 5 - 6 -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 7 (Concluded). Tensile properties as a function of test temperature for N155 alloy cold reduced 40 percent. Material was tested both as-rolled and after creep exposure.

27 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 A Transverse A A 270 ------- 260 -- 250 0~ 0 240 ^ A ___ ___ ____A_ 230 W 220 --- A A 4-< 210 200 - 0.8 o 0 T 0T. 0.7 - - -- - -- -- -- 0.6 Z 0.5 Figure 8. Tensile properties as a function of test temperature for N155 alloy cold reduced 65 percent. Material was tested both asrolled and after creep exposure.

28 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 Transverse A 240 230 rl 220 Em 190 a):: 180 —----- 5 i70 tD 160 160 ---- -— _ ----- - _- _ -- YS, 2 0 - - _ _ o k 15 a ) 0O 4- 10 ---------------------- A 0 [] 5 -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 8 (Concluded). Tensile properties as a function of test temperature for N155 alloy cold reduced 65 percent. Material was tested both as-rolled and after creep exposure.

29 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 0 Transverse A A 250 240 230 Pg o ~ 220 o 210 _ EO a) 70?-6 4-4 ~4 0.80 180 200 20 —- - - - - - L 0 (D *r'4 ~~~~~~~~~0 100 0. - — A — 4j 0 _ —_ -- 0 -- Q 0. ---- -—.0. 5 Figure 9. Tensile properties as a function of test temperature for L605 alloy cold reduced 25 percent. Material was tested both asrolled and after creep exposure.

30 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 C Transverse A 210 200 190 - 180 10 160 *D r\] a p t 150 --- - alycdreu --- --- -- -- -- - tne 140 0 130 - --- - - - - 25 --- --- -- * — — _ - 4 20 __ — __ - __ ___ 0 pH 15 -----. —-- - I 10 --- __-_...___ —_.......___ _. 5 A o -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. Z-percent offset yield strength and elongation Figure 9 (Concluded). Tensile properties as a function of test temperature for L605 alloy cold reduced 25 percent. Material was tested both as-rolled and after creep exposure.

51 As Exposed 1000 hrs under 40, 000 psi Rolled 650~F Longitudinal 0 Transverse A 310 300 290 280 270 (a0 A 260 c0 4 250 ----- D 240 - 230 o 0. 8 cr4 0.7 0. ---------------------------- 4-t j) 0o. U A 0 Z _ 0.3 _____ -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 10. Tensile properties as a function of test temperature for L605 alloy cold reduced 45 percent. Material was tested both asrolled and after creep exposure.

32 As Exposed 1000 hrs under 40, 000 psi Rolled 6500~F Longitudinal O ~ Transverse A 260 - 250.r4 U) 240 o o o 230 0 220 ___ 210 r 200 --- c_ 90 190 0 _ 0 a> 6 rt, 4 2 AAI I 91 iA -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 10(Concluded). Tensile properties as a function of test temperature for L605 alloy cold reduced 45 percent. Material was tested both as-rolled and after creep exposure.

35 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 $ Transverse A A 250 z 230 O 220 o 210. 200 I. 5 190 ---- 180 - 0 -0 0000000 9 - 0 7 [0.o.6 43. 0.5 z 0.5 __.__ -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 11. Tensile properties as a function of test temperature for D979 alloy cold reduced 30 percent and aged 16 hours at 1200~F. Material was tested both as-heat treated and after creep exposure.

54 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 ~ Transverse A 220 210 - P-~~(0 O i 190 170 0160 ---— _ _ _150 -- 8 I I I I I -- I I i40 10 8 *I 4 ______ off__se _yield stent _ eloa t___o b0l 0 P1 6 0.- -200 0 200 400 600 800 1000 4 -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 1 l(Concluded). Tensile properties as a function of test temperature for D979 alloy cold reduced 30 percent and aged 16 hours at 1200~F. Material was tested both as-heat treated and after creep exposure.

55 As Heat Treated Longitudinal 0 Transverse A 290 280 ---- ---- 0' 270 -- O o A, 260 "O 250 240 *~ 230 r-t 220 2 0.8 - 0.7 0 0. 0. 5 0.4 0. 3 -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 12. Tensile properties as a function of test temperature for D979 alloy cold reduced 50 percent and aged 16 hours at 1100~F.

56 As Heat Treated Longitudinal 0 Transverse A 270 _. _l260 m 250 -- o 0 40- -- 230 220 r-4 2 210 200 190 10 6 0.,-i 4 — 4 20 0 -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. Z-percent offset yield strength and elongation Figure 12(Concluded). Tensile properties as a function of test temperature for D979 alloy cold reduced 50 percent and aged 16 hours at 1100~F.

57 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 ~ Transverse A 220 210 -- 200 190 — 180 - a) 140. 170 ____ 160 - — _ 150 140- ---- ---- 200 40 60 80 - - 2 1. 4-) 0. 9 o. 6 -200 0 200 400 600 800 1000 Test Temperature, ~F (a) Ultimate tensile strength and notch tensile strength ratio Figure 13. Tensile properties as a function of test temperature for A286 alloy cold reduced 30 percent and aged 16 hours at 1300~F. Material was tested both as-heat treated and after creep exposure.

58 As Heat Exposed 1000 hrs under 40, 000 psi Treated 650~F Longitudinal 0 Transverse A 200 190 -- -r-l P 180 -- o o 170 a 160 04.140 130 120 0 25 17 (Cn —-- ---- ---- ------- - saa — -- -- -------- --- pe 2u0 -f — -- -— a --------- -- c- r —-- -30 percent anda TQ 4- 15 0 o at 130 - M — --- ------ ---------- e_ ------- -and a 0 (b) 0. Z-percent offset yield strength and elongation Figure 13 (Concluded). Tensile properties as a function of test temperature for A286 alloy cold reduced 30 percent and aged 16 hours at 1300~F. Material was tested both as-heat treated and after creep exposure.

39 As Heat Treated Longitudinal O Transverse A 290 280 C.r 0 o 270 o ^ 260 c 250 -- O) 4-a 240 230 ______ A 220 0 200 400 600 800 1000 210 o.7 ----------.' A c,O Figure 14. Tensile properties as a function of test temperature for A286 alloy cold reduced 80 percent and aged 16 hours at 1100F. Test Temperature, ~F A286 alloy cold reduced 80 percent and aged 16 hours at 1100~F.

40o As Heat Treated Longitudinal 0 Transverse A 270 260 250 o 240 o - 230 t. 220 " 210 200 190 10 0.H 0 4j o -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 14 (Concluded). Tensile properties as a function of test temperature for AZ86 alloy cold reduced 80 percent and aged 16 hours at 1100~F,

41 As Heat Treated Longitudinal O Transverse A 220 210 A o 190 bo 180 170 * 160 ----- 1. 2!50 40 - -- I L > - 1_ I - -200 0 00 400 600 800 1000 (0D Test Temperature, O 0 0.7 -O00 0 2O0 400 600 800 1000 (a) Ultimate tensile strength and notch tensile strength ratio Figure 15. Tensile properties as a function of test temperature for AM350 alloy in the CRT condition.

42 As Heat Treated Longitudinal O Transverse A 180 170 o 160 150 ~ 140 —--- - 110 100 25....... —-—.......... —.. -- ---- 25 rd 1)~0 4-) 0 5 ----- -200 0 200 400 600 800 1000 Test Temperature, ~F (b) 0. 2-percent offset yield strength and elongation Figure 15 (Continued). Tensile properties as a function of test temperature for AM350 alloy in the CRT condition.