大变形异步叠轧法制备超细晶铜材的再结晶研究Study on recrystalization of ultrafine grain copper prepared by asymmetrical accumulative roll-bonding
王军丽,史庆南,吴承玲
摘要(Abstract)：
采用大变形异步叠轧法制备了超细晶铜材,研究了再结晶过程中铜材的组织演变过程、织构变化过程以及晶界特征分布情况。结果表明:经过220℃×35min和220℃×60min退火处理,分别获得0.1~0.2μm和0.5~1.0μm范围的超细晶铜材,主要晶界类型均属于低能晶界;六道次叠轧后的无氧纯铜板材在退火初始阶段仍为轧制织构,但由于剪切力的作用织构强点位置发生偏移、强度有所降低;随着退火时间的延长,织构组分发生变化,C取向发生孪晶转变,流向B/G取向。
关键词(KeyWords)： 织构;再结晶;超细晶
基金项目(Foundation): 国家自然科学基金(50564005);; 云南省自然科学基金重点项目(2003E0003Z)
作者(Author): 王军丽,史庆南,吴承玲
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