Stabilizing the body centered cubic crystal in titanium alloys by a nano-scale concentration modulation

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• 作者：H.L. Wang ; S.A.A. Shah ; Y.L. Hao ; ^{ylhao@imr.ac.cn}
• 关键词：Titanium alloys ; Composition fluctuation ; Crystal structure ; Synchrotron radiation ; Shape memory ; Elasticity
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：5 April 2017
• 年：2017
• 卷：700
• 期：Complete
• 页码：155-158
• 全文大小：633 K
• 卷排序：700

文摘

A nano-scale Nb modulation is created by spinodal decomposition in a Ti-alloy. The Nb modulation stabilizes the bcc β phase against metastable transformations. The bcc β phase is stable in the alloy with a low electron-to-atom ratio of 4.15. The alloy has lower elastic modulus and larger MT strain than the previous alloys. The tuning of spinodal decomposition is a valid strategy to design titanium alloys.