Abstract
This article presents research on the tensile yield stress of anα-Ti alloy at temperatures from 373 to 77 K and strain rates from 10−4 to 102. The yield stress increases linearly with logarithmic strain rate. An analysis has been made on activation energy with the variation of effective stress which was obtained either by lowering temperature at constant strain rates or by increasing strain rates at constant temperatures. Activation energy is a function of temperature. It does not change when effective stress is increased by increasing strain rates but decreases with lowering temperature and is not influenced by strain rate.
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