Hisaoki Sasano1, Michio Hanaki2 and Hirozo Kimura1
1National Research Institute for Metals, Tokyo
Strain aging behaviour in α -solid solution titanium alloys containing various substitutional elements has been investigated.
The yield phenomena due to the strain aging become more prominent with increasing substitutional solute and oxygen contents and also with increasing difference from titanium in regard to the atomic radius of the substitutional solute. Assuming that the strain aging phenomena are caused by the interaction of substitutional-interstitial pairs with screw dislocations, a theory has been proposed. The theory seems to give agreement with the results obtained.
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