http://hdl.handle.net/2027.42/78391 Sat, 25 May 2013 23:32:18 GMT 2013-05-25T23:32:18Z http://hdl.handle.net/2027.42/83492 Room-temperature flow in a metallic glass -- strain-rate dependence of shear-band behavior Jiang, W. H.; Atzmon, Michael The rate dependence of serrated flow in amorphous Al86.8Ni3.7Y9.5 has been investigated by nanoindentation. Three samples, containing different initial amounts and distributions of free volume, were used: as quenched, cold rolled and annealed below the crystallization temperature. When the cold-rolled sample is indented at low rates, no new shear bands form, and stable, time-dependent, flow takes place at pre-existing shear bands, well below the glass transition temperature. Aside from instrumental resolution, factors that likely affect serrated flow include the magnitude of the yield drop and the shear-band propagation velocity. The trends we observe are compared with calculations based on the free-volume theory. Sat, 01 Jan 2011 00:00:00 GMT http://hdl.handle.net/2027.42/83492 2011-01-01T00:00:00Z http://hdl.handle.net/2027.42/83409 Formation And Characterization of Amorphous Erbium-Based Alloys Prepared By Near-Isothermal Cold-Rolling of Elemental Composites Atzmon, Michael; Unruh, Karl M.; Johnson, William L. The article originally appeared in Journal of Applied Physics 58, 3885 (1985) and may also be found at The article originally appeared in Journal of Applied Physics 58, 3865 (1985) and may also be found at ttp://jap.aip.org/resource/1/japiau/v58/i10/p3865_s1 Tue, 01 Jan 1985 00:00:00 GMT http://hdl.handle.net/2027.42/83409 1985-01-01T00:00:00Z http://hdl.handle.net/2027.42/83408 Calorimetric Evidence For Polymorphous Constraints On Metastable Zr-Al Phase Formation By Mechanical Alloying Ma, E.; Atzmon, Michael The article originally appeared in Physical Review Letters 67, 1126 (1991) and may also be found at http://prl.aps.org/abstract/PRL/v67/i9/p1126_1 Tue, 01 Jan 1991 00:00:00 GMT http://hdl.handle.net/2027.42/83408 1991-01-01T00:00:00Z http://hdl.handle.net/2027.42/83407 The effect of compression and tension on shear-band structure and nanocrystallization in amorphous Al90Fe5Gd5 : a high-resolution transmission electron microscopy study Jiang, W. H.; Atzmon, Michael Wed, 01 Jan 2003 00:00:00 GMT http://hdl.handle.net/2027.42/83407 2003-01-01T00:00:00Z