A novel method for predicting variant selection during primary, secondary and tertiary twinning in titanium

●We propose a novel method based on Schmid׳s law for predicting the twin variant selection in titanium.●This method is proved to be a more effective criterion than Schmid׳s law by comparing with the experimental results.●This method effectively improves the accuracy to about 90% of predicting the primary, secondary and tertiary twinning variant selection.

The present paper proposes a novel method based on Schmid׳s law by introducing a calculation of “Normalized Schmid factor” as an indispensable criterion for predicting twin variant selection in commercially pure titanium. Through comparing the calculation with experimental results, this novel method is proved to be a more effective criterion than Schmid׳s law and the accuracy is about 90% during primary, secondary and tertiary twinning variant selection.