波纹辊轧制TA1钛板退火处理后的织构演变  

Texture Evolution after Annealing of TA1 Titanium Sheet Rolled by Corrugated Roll

作　　者：刘欣阳 张孟非 李莎 张长江[1] 韩建超[2,3] LIU Xinyang;ZHANG Mengfei;LI Sha;ZHANG Changjiang;HAN Jianchao(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;School of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Engineering Research Center of Advanced Metal Composite Forming Technology and Equipment,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原理工大学机械与运载工程学院,山西太原030024 [3]太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心,山西太原030024

出　　处：《热加工工艺》2024年第3期88-94,共7页Hot Working Technology

基　　金：国家自然科学基金资助项目(51904205);中央引导地方科技发展资金项目(YDZJSX2021A020);山西省科技重大专项(20181101008);山西省高等学校科技创新项目(2019L0216)。

摘　　要：采用波纹辊+平辊轧制(CFR)和平辊+平辊轧制(FFR)在400℃下制备了TA1纯钛板材。利用SEM和EBSD技术分析TA1纯钛板在650℃保温1h退火处理后的微观组织和织构演变特征。结果表明,板材经过波纹辊轧制后,在RD方向上呈现周期性显微组织变化,在ND方向上表现出渐进式显微组织梯度。二道次平轧后,将试样进行650℃保温1h退火处理,CFR钛板晶粒等轴化程度低于FFR钛板。对两种工艺的极图分析后发现,两种轧制工艺制备的钛板织构都为典型的基面双峰TD织构,CFR钛板厚度方向的中间区域织构有一定弱化,并且沿TD轴方向的极密度强区多且分散。此外,两种轧制工艺制备的钛板的织构类型相近。TA1 pure titanium sheets were prepared by corrugated roll+flat roll rolling(CFR)and flat roll+flat roll rolling(FFR)at 400℃.The microstructure and texture evolution characteristics of TA1 pure titanium sheet after annealing at 650℃for 1 h were analyzed by SEM and EBSD techniques.The results show that after corrugated roll rolling,the change of periodic microstructure is exhibited in the RD direction,and progressive microstructure gradients are exhibited in the ND direction.After the second pass of flat rolling,the samples were annealed at 650℃for 1 h,and the equiaxing degree of the CFR titanium sheet is lower than that of the FFR titanium sheet.After the pole figure analysis of the two processes,it is found that the texture of the titanium sheet prepared by the two rolling processes is a typical basal plane bimodal TD texture,and the texture in the middle region of the CFR titanium sheet in the thickness direction is weakened in a certain extent,and the extreme density regions in the TD axis direction are numerous and dispersed.In addition,the texture types of titanium sheets prepared by the two rolling processes are similar.

关 键 词：波纹辊轧制 纯钛 再结晶退火 织构 

分 类 号：TG339[金属学及工艺—金属压力加工]