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OALib Journal期刊
ISSN: 2333-9721
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在a6电工铝导线的冷拉拔过程中织构的演变
Keywords: 金属材料,织构演变,拉拔,铝导线,微结构
Abstract:
？用宏微观织构分析方法研究了a6铝导线冷拉拔过程中的织构演变。结果表明,这种导线在拉拔过程中形成以<111>和<100>丝织构为主的形变织构,随着变形量的增大<100>织构减少、<111>织构增强。形变织构沿导线的径向呈不均匀分布:在中等形变量情况下,从导线表层至中心织构由强<100>织构(体积分数~52%)过渡到强<111>织构(体积分数~55%);在高应变量情况下,径向织构梯度减弱,通体形成强<111>织构(各层的<111>织构体积分数超过70%)。同时,在拉拔过程中导线心部的硬度比表层的高,表明织构对导线强度及沿径向分布梯度起重要作用。用调整拉拔工艺可对位错密度和织构及其分布进行优化,进而提高导线的强度和导电性能。
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