异步累积叠轧纯铜再结晶温度、时间对孪晶的影响  

Effects of Recrystallization Annealing Temperature and Time on Upon Twins in Pure Copper by AARB

作　　者：周蕾[1] 史庆南[1] 王军丽[1] 米辉[1] 刘润[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《热加工工艺》2012年第13期29-32,共4页Hot Working Technology

基　　金：国家自然科学基金(50804018);稀贵及有色金属先进材料教育部重点实验室开放基金(ZDS2010015C);2010云南省科技条件平台建设计划(2010DH025)联合资助

摘　　要：采用异步叠轧法辅以热处理制备超细孪晶铜材,研究了不同再结晶退火温度和时间,对退火组织和其中退火孪晶的影响。结果表明:当退火温度在185℃时,随着退火时间的延长,发生再结晶的区域增多,退火孪晶也相应增多,但是再结晶不完全;当退火温度在190℃时,在20～25min退火时间内形成了均匀细小的退火孪晶,退火孪晶大小在2μm左右;当退火温度达到220℃时,退火孪晶的尺寸明显长大,且数量有所减少,达不到所需的超细孪晶铜的要求。The Asymmetrical Accumulative Rolling Bonding （AARB） method supplemented by heat treatment was used to prepare ultra-fine twin copper. The effects of recrystallization annealing temperature and time on the annealing twin were studied. The results indicate that when the annealing temperature is 185℃, as the extension of the annealing time, recrystallization regional increases, annealing twins are correspondingly increased, but incomplete recrystallization. When the annealing temperature is 190℃, 20-25min annealing time forming a uniform fine annealing twins, annealing twin size is around 2 μm. When the annealing temperature reaches 220℃, annealing twins size obviously grows up, but the number of annealing twins decreased in derrease, the annealing twin can not meet the requirements of ultal-fme twins of copper.

关 键 词：纯铜 异步累积叠轧 再结晶 超细孪晶 

分 类 号：TG111[金属学及工艺—物理冶金]