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Convexity restrictions on non-quadratic anisotropic yield criteria
(Elsevier, 1987)
Examination of Hill's 1979 anisotropic yield criterion [Math. Proc. Camb. Phil. Soc. 85, 179 (1979)] shows that for Cases I, II and III, there are combinations of m and R for which the yield loci are outwardly concave or ...
Metastable phase formation by ion beam mixing
(Elsevier, 1987-04-03)
There are essentially four basic types of metastable alloys which may be formed through heavy ion irradiation of crystalline structures: amorphous phases with no long range order; crystalline phases with structures different ...