任 毅,张喜燕,孙 奇,刘 庆.高纯钛压缩孪生行为研究[J].稀有金属材料与工程,2018,47(7):2061~2066.[Ren Yi,Zhang Xiyan,Sun Qi,Liu Qing.Study of Compressive Twinning Behavior in High-purity Titanium[J].Rare Metal Materials and Engineering,2018,47(7):2061~2066.]
高纯钛压缩孪生行为研究
投稿时间:2016-09-02  修订日期:2016-12-28
中文关键词:  高纯钛  压缩孪晶  取向关系  孪晶反应
基金项目:国家自然科学基金资助(项目号51271208、 51421001)
中文摘要:
      利用背散射电子衍射(EBSD)技术对高纯钛形变组织中{11-22}和{11-24}压缩孪生进行了研究。结果表明:{11-24}孪晶总是伴随{11-22}孪晶在同一晶粒中产生,在变形组织中没有发现单独存在的{11-24}孪晶;这种极少出现的{11-24}压缩孪晶主要由{11-22}孪晶与晶界或{11-22}孪生变体之间交互作用改变了局部应力状态而诱发的。由{11-22}孪晶诱发的{11-24}孪晶更倾向于同其中一个{11-22}孪生变体具有相同的转轴。此外,根据晶体对称性及相同晶粒中{11-22}和{11-24}孪晶之间的取向关系,{11-22}-{11-24}孪晶反应可形成四种不同类型的孪晶反应界面。
Study of Compressive Twinning Behavior in High-purity Titanium
英文关键词:high-purity titanium  compressive twinning  orientation relationship  twin-twin interaction
英文摘要:
      Compressive twinning behavior in high-purity titanium was studied by electrical back-scattered diffraction (EBSD) techniques. The results show that {11-24} twins are always accompanied with {11-22} twins in some specific grains, and individual {11-24} twin is not observed in microstructure of the deformed sample. The formation of {11-24} twin is attributed to the changes of local stress states, which induced by the {11-22}-{11-22} twin variants interactions or {11-22} twin interactes with the grain boundaries. The {11-22} and {11-24} twins tend to share a common rotation axis with one of the {11-22} twin variant within an initial grain. In addition, due to the crystal symmetry and the orientation relationships between {11-22} and {11-24} twins, interactions between {11-22} and {11-24} twins inevitably occur, which results in four different types of {11-22}-{11-24} twin junctions.
作者单位E-mail
任 毅 重庆大学 zsrenyi@163.com 
张喜燕 重庆大学 kehen888@163.com 
孙 奇 重庆大学  
刘 庆 重庆大学  
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