SUPERPLASTIC-LIKE DEFORMATION IN SOME SOLID-SOLUTION ALLOYS

[摘要] The stress relaxation and tensile test data of Incoloy 800H and Al-4.6%Mg are described at temperatures where the contribution of grain boundary sliding to flow is significant. It is shown that in the presence of grain boundary sliding the whole range of behavior, from ordinary creep to superplastic-like flow, can be exhibited in the same metals, showing that the strain rate sensitivity increases with decreasing grain size or increasing temperature in the chosen temperature range. The effect of solute hardening on the flow behaviour of solid solution alloys in the presence of grain boundary sliding is also discussed.

[发布日期] 1991-05-15

[效力级别]  Proceedings Paper