通过力学性能测试，扫描电镜、透射电镜观察等手段，研究了固溶淬火后不同程度预变形对2197铝锂合金力学性能及显微组织的影响。

The effects of plastic deformation prior to artificial aging on the microstructure and tensile properties of 2197 Al-Li alloy were investigated through tensile test, SEM and TEM.

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固溶、淬火等热处理手段极大地提高了其机械强度，但同时使其内部产生了较大的残余应力。

Heat treatment methods, such as solid solution and quenching, have greatly enhanced its mechanical strength, which also leave a large internal residual stress in it.

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介绍了固溶处理温度、淬火到时效间隔时间及时效制度等对2A70铝合金预拉伸厚板组织和性能的影响；

The effect of quenching temperature, the interval time from quenching to aging and aging institution to 2A70 aluminium alloy pre-stretching plate structure and properties are introduced.

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