The Formation of Strong {100} Texture by Dynamic Strain-Induced Boundary Migration in Hot Compressed Ti-5Al-5Mo-5V-1Cr-1Fe Alloy
The Formation of Strong {100} Texture by Dynamic Strain-Induced Boundary Migration in Hot Compressed Ti-5Al-5Mo-5V-1Cr-1Fe Alloy
复制标题
热压缩Ti-5Al-5Mo-5V-1Cr-1Fe合金中动态应变诱导边界迁移形成强{100}织构
DOI：
10.3390/met7100412
复制
发表时间：
2017-10-01
期刊：
影响因子：
2.9
通讯作者：
Yang, Ping
中科院分区：
文献类型：
--
作者：
Li, Kai;Yang, Ping
采用电子背散射衍射技术研究了Ti-5Al-5Mo-5V-1Cr-Fe合金在热压缩过程中的组织和织构演变。结果表明，热压缩后形成了含纤维织构和纤维织构两种主要织构成分。各组分的含量主要受变形速率和应变速率的控制。动态应变诱导边界迁移（D-SIBM）被证明是取向晶粒向取向晶粒生长的原因。取向晶粒随着织构强度的增大而变粗。动态再结晶（DRX）发生在低应变速率和大变形条件下。采用晶粒取向扩散法检测DRX晶粒。DRX晶粒保留了类似于变形织构的纤维织构；然而，由于DRX的体积分数很低，它并不是造成强织构形成的主要原因。
The microstructure and texture evolution of Ti-5Al-5Mo-5V-1Cr-Fe alloy during hot compression were investigated by the electron backscatter diffraction technique. The results reveal that two main texture components containing and fiber textures form after the hot compression. The fraction of each component is mainly controlled by deformation and strain rate. Dynamic strain-induced boundary migration (D-SIBM) is proved to be the reason that -oriented grains grow towards -oriented grains. The -oriented grains coarsen with the increasing texture intensity. Dynamic recrystallization (DRX) occurs under a low strain rate and large deformation. The DRX grains were detected by the method of grain orientation spread. The DRX grains reserve a fiber texture similar to the deformation texture; however, DRX is not the main reason causing the formation of a strong texture, due to its low volume fraction.