(1. 西北工业大学 凝固技术国家重点实验室，西安 710072；
2. 中国航空工业集团公司 北京航空材料研究院，北京 100095)
摘 要: 采用光学显微镜和X射线衍射仪分析TB-13合金在不同热轧变形条件下组织和织构的演变规律。结果表明：TB-13合金在变形量小于50%的热轧过程中只发生动态回复，当变形量增加到59%时，该合金发生动态再结晶，且随着变形量的增加，动态再结晶程度逐渐增大，细小的再结晶亚晶粒逐渐取代原始等轴状β晶粒从而使组织细化，动态再结晶是该合金热轧过程中主要的细化机制。同时，热轧变形使得该合金形成以旋转立方取向{001}＜110＞织构和Goss取向{110}＜001＞织构为主的多种织构，且随着变形量的增大，晶粒取向由Goss取向向旋转立方取向转移。
关键字: TB-13合金；热轧变形；显微组织；织构
texture of TB-13 alloy
（1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;
2. Beijing Institute of Aeronautical Materials, Aviation Industry Corporation of China, Beijing 100095, China）
Abstract:The evolutions of microstructure and texture for TB-13 alloy during hot rolling were investigated by optical microscopy and X-ray diffracometry. The results show that the deformation mechanism is dynamic recovery in TB-13 alloy when the deformation reduction is less than 50%. When the deformation reduction is 59%, dynamic recrystallization occurs and the volume fraction of dynamic recrystallization increases with the increase of the deformation reduction. The equiaxed β grains are substituted for the recrystal grains, which leads to microstructure refinement. This indicates that the refinement mechanism is dynamic recrystallization. The main texture components of TB-13 alloy after hot rolling deformation are {001} ＜110＞ and {110} ＜001＞ textures. The orientation of grain changes from Goss orientation to rotating cube orientation when the deformation reduction increases.
Key words: TB-13 alloy; hot rolling deformation; microstructure; texture
