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7475铝合金大型锻件时效工艺研究

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摘要 测定了 74 75铝合金双级时效及回归再时效 (RRA)工艺状态下的常规拉伸性能和电导率 ,并通过标准三点弯曲和圆周切口圆柱试验测定了各时效工艺的断裂韧性 ,从而研究双级时效和RRA工艺对常规力学性能、断裂韧性、电导率和微观组织的影响。结果发现回归再时效工艺并不适用于 74
出处 《国外金属热处理》 2004年第3期26-29,共4页 Heat Treatment of Metals Abroad
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