By proper solution treatment the grain size of alloys was moderate, thus a good combination of strength, plasticity and the resistance to thermal fatigue was obtained.

采用适当固溶温度处理，该二合金晶粒度适中，可获得强度、塑性和抗热疲劳性能较好的配合。

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It is shown that the mechanical properties of annealed sample of 2224 aluminum alloy are improved by the combination of solid solution and aging treatment after ECAP, the size of grain is refined.

结果表明，退火态2224铝合金经e CAP挤压后，进行固溶和时效处理，明显提高了合金的力学性能，细化了合金的晶粒。

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Different ferrite grain size and combination of ferrite, bainite and martensite phases were obtained according to the control of cooling rate.

通过冷却速度的控制实现钢材内部铁素体、贝氏体、马氏体不同的相组成和铁素体晶粒尺寸。

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