采用电容贮能点焊焊接方法,研究了CuZnAl形状记忆合金的焊接性能.运用金相观察、拉伸、扫描电镜等方法,对焊接接头的力学性能,形状恢复率等进行了试验研究,并研究了热处理对焊接接头力学性能和形状恢复率的影响,给出了获得较高形状恢复率接头的焊接工艺.试验结果表明,焊后热处理能够细化CuZnAl形状记忆合金的晶粒组织,在一定程度上提高了合金的综合力学性能,经一定冷热循环次数后,焊接接头形状恢复率达到较高水平并趋于稳定.
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