G. Abowitz
Published: 1963
Total Pages: 134
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The tensile behavior of dilute Ta-H and Ta-Mo alloys was studied as a function of alloying addition, grain size and test temperature at a constant strain rate. The results are interpreted in terms of the parameters sigma sub-i and k sub-y of the Petch equation. For Ta-H alloys at 25 C sigma sub-i was independent of hydrogen content whereas k sub-y increased with hydrogen content. Deformation twinning was not observed in Ta-H alloys either at 25 C or at -196 C. Dilute additions of Mo to Ta at 25 C resulted in an increase in k sub-y whereas sigma sub-i was unaffected. Twinning was observed at -196 C but not at 25 C.A large increase in ductility accompanied twinning.