李周选,陈庆吟,侯嘉鹏,王强,高义波,徐爱民,张哲峰

• 1:浙江华电器材检测研究所有限公司国家电力器材产品安全性能质量监督检验中心
• 2:浙江华云清洁能源有限公司
• 3:中国科学院金属研究所材料疲劳与断裂实验室

摘要(Abstract)：

研究了Al-Mg-Si合金线的强度和微观组织结构与拉拔变形量的关系,分析了Al-Mg-Si合金线的强化机制。结果表明:Al-Mg-Si合金线强度随变形量的增大呈现两阶段特征,第一阶段为变形量小于55.3%时,Al-Mg-Si合金线强度随着变形量的增大而缓慢增加,第二阶段为变形量超过55.3%时,Al-Mg-Si合金线强度随着变形量的增大大幅增加;随着拉拔变形量增大,Al-Mg-Si合金线内位错密度逐渐增大,横截面<001>织构逐渐向<111>织构转变,变形初期Al-Mg-Si合金线内存在大量的小角度晶界,变形后期小角度晶界逐渐演化为大角度晶界;Al-Mg-Si合金线强度随变形量的增大而增加的机制为位错强化、织构强化和细晶强化,导致Al-Mg-Si合金线强度与变形量呈现两阶段关系的原因是不同取向差晶界的强化作用差异。

关键词(KeyWords)： 铝镁硅合金线;拉拔;强度;微观组织结构演化

Abstract:

Keywords:

基金项目(Foundation): 国家电网浙江省电力公司项目(5211HD190002);; 中国博士后科学基金(2019M661151)

作者(Author): 李周选,陈庆吟,侯嘉鹏,王强,高义波,徐爱民,张哲峰

DOI: 10.13289/j.issn.1009-6264.2020-0247

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