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采用拉伸试验、扫描电镜和透射电镜等测试手段,研究了固溶淬火后预变形程度对新型高强Al-Cu-Li-X铝锂合金2A97组织和性能的影响.结果表明:随预变形量增加,135℃时效48 h合金强度明显提高,塑性缓慢下降,变形量为4.7%合金的抗拉强度为584 MPa,延伸率为12.6%,淬火后的预变形量控制在4%~6%得到比较理想的强塑性匹配.预变形促进基体T1相析出,并使其显著细化和均匀分布.

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