陈彦旭,张鸿,钟江伟,吴恒,吕佳峰

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用电子背散射衍射技术对比研究了经大变形冷拔后的连续纤维晶纯铜线材860℃×30 s高温短时退火与400℃×1 h低温长时退火其微观组织、织构和晶界特征分布以及力学性能和导电性能的变化规律。结果表明:经860℃退火30 s后铜样品基本完成再结晶,其晶粒平均直径为20μm与400℃×1 h退火结果 25μm相差不大,且两者的织构均为较明显的<100>丝织构;860℃退火30 s后其重合位置点阵(Coincidence Site Lattice,CSL)晶界量可达51%明显高于400℃退火处理结果 35%。高温退火后的抗拉强度和导电率与低温大致相当,高温退火和低温退火后铜线的导电率均达到较高水平分别为103.29%IACS和101.50%IACS。因此,连续纤维晶纯铜线材经860℃高温短时退火后获得的力学性能和导电性能不低于低温退火。

关键词(KeyWords)： 铜;冷拉拔;退火;CSL晶界;织构

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51274265)

作者(Author): 陈彦旭,张鸿,钟江伟,吴恒,吕佳峰

DOI: 10.13289/j.issn.1009-6264.2016.09.013

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