对2618铝合金进行了(1)固溶处理+峰值时效处理(T6),(2)固溶处理+ ECAP+峰值时效处理,(3)固溶处理+ ECAP+短时再结晶+峰值时效处理;采用光学显微镜对2618合金的晶粒组织进行了观察与分析;采用拉伸试验机对2618合金峰值时效处理后的力学性能进行了测试.研究结果表明,采用固溶处理+ ECAP+短时再结晶+峰值时效处理能明显细化2618耐热铝合金的晶粒组织,有效提高该合金的综合力学性能;该新型形变热处理工艺是一种行之有效的2618铝合金强韧化方法.
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