Ti-IF钢罩式退火过程中再结晶织构演变规律研究
Study on Evolution Law of Recrystallization Textures in Ti-IF Steel During Annealing
殷安民, 程知松, 江海涛
点击：3018次 下载：0次
作者单位：北京科技大学 高效轧制国家工程中心, 北京 100083
中文关键字：Ti-IF钢； 再结晶织构； 取向； 演变机制
英文关键字：Ti-bearing IF steel; recrystallization textures; orientation; evolution mechanism
中文摘要：采用X射线衍射技术(XRD)和电子背散射衍射技术(EBSD)，并结合微观组织观察分析了Ti-IF钢罩式退火过程中织构演变规律和{111}再结晶织构形成机制。结果表明：随退火温度的升高，再结晶量逐渐增多，{111}再结晶织构强度亦逐渐增强，同时{100}织构强度逐渐减弱。{111}取向的晶粒主要在再结晶过程中形成，依靠吞并其他取向[主要是{100}取向]的晶粒而长大；并且在{111}取向晶粒长大过程中，γ纤维织构之间也发生相互转化，主要由{111}<112>织构转变为{111}<110>织构；冷轧IF钢再结晶退火后具有较强的γ纤维织构，主要是“取向形核”和“取向长大”共同作用的结果，其中Σ重位晶界在再结晶γ纤维织构形成过程中起着重要作用。
英文摘要：The evolution law of {111} recrystallization textures during annealing and its forming mechanism were investigated using X-ray diffraction (ODF analysis), electron back-scatter diffraction (EBSD) and optical microscopy (OM). The results show that both the quantity of recrystallization texture and the density of the recrystallization texture increase with the increase of annealing temperature, and the intensity of the recrystallization texture decreases at the same time. the recrystallization texture mainly forms during the recrystallization process and grows up depending on consuming other textures [mainly {100} texture]. Furthermore, the {111} textures including {111} <112> and{111} <110> have mutual transformation in γ fiber texture during recrystallization process. The cold-rolled Ti-IF steel has a strong γ fiber texture after annealing mainly due to the conjunct of the oriented nucleation mechanism and the oriented growth mechanism. The Σ coincidence site lattice (CLS) of grain boundaries plays an important role in the formation of {111} fiber recrystallization texture in the steel.