Abstract Formation process and variant selection of 11 2 ¯ 2 twin pair (TP) in Ti was investigated by using quasi in-situ rolling treatment at cryogenic temperatures. Variants of 11 2 ¯ 2 TP were found either develop along the same direction or reverse directions. Schmid law, geometrical compatibility factor (GCF) and grain misorientation were used for quantitative analysis. Schmid law is found more effective in predicting the variant selection than that of GCF. With the increase of parent grain misorienation, 11 2 ¯ 2 TP becomes harder to generate because of lower GCF.

中文翻译：

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低温轧制钛中{112̅2}孪晶对的准原位研究

摘要 采用低温准原位轧制处理，研究了钛中11 2 ¯ 2 孪晶对(TP)的形成过程和变体选择。发现11 2 ¯ 2 TP 的变体要么沿相同方向发展，要么沿相反方向发展。施密德定律、几何相容性因子 (GCF) 和晶粒取向错误用于定量分析。发现施密德定律在预测变体选择方面比 GCF 更有效。随着母粒取向差的增加，11 2 ¯ 2 TP 变得更难生成，因为 GCF 较低。