采用自制实验装置对l A60铝导线在温度为90 ～ 130℃、应力为70 ～85 MPa条件下进行压入蠕变机制研究,并通过SEM和XRD分析蠕变前后的组织演变.结果表明:铝导线在稳态蠕变阶段的应力指数n为4.03,蠕变激活能QC为75.38 kJ/mol;蠕变后,导线受力区域的晶粒被压缩,基体被α-A112Fe3Si相割裂,导致铝导线抗蠕变性能降低;铝导线的压入蠕变机制为晶界扩散主导的位错攀移运动.
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