工业纯铜极薄带异步轧制的织构演变  

Texture Evolution of Pure Copper During Ultra-thin Strip Asymmetrical Rolling

作　　者：宋海涛[1] 宋孟[2] 杨德胜[1] 关德满 李婧[1,2] 刘相华[2] 

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [2]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819

出　　处：《热加工工艺》2015年第9期37-40,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51374069);辽宁省博士启动基金项目(20131062)

摘　　要：在轧制过程无退火处理的条件下,通过同步轧制和异步轧制将工业纯铜从5.8 mm轧薄至20μm。采用取向分布函数和取向线分析方法研究了轧材织构的演变规律。结果表明:均匀退火后的原料初始织构主要为旋转立方织构{100}<011>,在剧烈塑性变形过程中,晶粒取向主要在β线上聚集,其形变织构主要由铜型织构{112}<111>和黄铜织构{011}<211>组成。样品在减薄过程中,织构强度不断增加,但在轧制后期织构增长速率并未因塑性变形程度的增加而减缓,反而显著增加。Pure copper was rolled from 5.8 mm to 20 μm by symmetrical rolling and asymmetrical rolling in rolling process without annealing. Rolling texture evolution was researched by using orientation distribution functions and orientation line analysis method. The results show that the initial texture of the raw material after homogenizing annealing is mainly rotating cube texture {100}〈011〉. In the severe plastic deformation process, grain orientation mainly gathers in the β line, and its deformation texture is mainly consist of copper type texture {112}〈111〉 and brass texture {011}〈211〉. In the thinning process,the texture intensity of the sample increases continuously. But texture growth rate in the later rolling does not slow down with plastic deformation increasing, and significantly increases.

关 键 词：工业纯铜 极薄带 异步轧制 织构 尺寸效应 

分 类 号：TG335.51[金属学及工艺—金属压力加工]