RT Journal Article
SR Electronic
T1 The yield stress of single crystals of α-phase Cu-Ni-Pd and Cu-Pd alloys
JF Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
JO Proc R Soc Lond A Math Phys Sci
FD The Royal Society
SP 267
OP 278
DO 10.1098/rspa.1989.0054
VO 423
IS 1865
A1
A1
YR 1989
UL http://rspa.royalsocietypublishing.org/content/423/1865/267.abstract
AB Single crystals of Cu-x at. % Ni-x at. % Pd [x ═ 1 to 6] and Cu-x at. % Pd alloys [x ═ 1, 2, 4 and 6] were deformed in tension at 293 K and 4.2 K. The crystals had the [331] {͞110} {͞1͞16} orientation which has two equivalent {͞1͞11} <011> and {͞1͞11} <101> primary glide systems. The concentration dependence of the critical resolved shear stress σ at the yield point for both alloy series was given by σT ═ σ0(T)+A(T) cα, where σ0(T) and A(T) are constants for one alloy series at T K and c is the atomic concentration of the solute. The exponent α is 0.72 or 0.73 for the Cu-Ni-Pd and 0.61 or 0.62 for the Cu-Pd alloy series at 293 or 4.2 K. The data for both alloy series could be fitted to the relation σ4.2K-σ293K ═ 1.046+0.526σ4.2K [MPa]. This establishes the stress equivalence behaviour of single crystals of these alloys.