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
刘欣阳 1张孟非 2李莎 2张长江 1韩建超2
作者信息
- 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;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
- 折叠
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.
Abstract
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Key words
corrugated roll rolling/pure titanium/recrystallization annealing/texture引用本文复制引用
基金项目
国家自然科学基金(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)
出版年
2024
NETL
NSTL
万方数据