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首页> 外文期刊>Journal of Materials Science >Effect of abnormal grain growth on tensile strength of Al-Cu-Mg alloy friction stir welded joints
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Effect of abnormal grain growth on tensile strength of Al-Cu-Mg alloy friction stir welded joints

机译：异常晶粒长大对Al-Cu-Mg合金摩擦搅拌焊接接头抗拉强度的影响

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摘要

An Al-4.5%Cu-1.5%Mg aluminum alloy with a T4 temper was friction stir welded, and the effect of the abnormal grain growth on the tensile strength of joints was investigated. Abnormal grain growth usually happens during post weld heat treatment. It is found that the tensile strength and elongation of the heat-treated joint will increase significantly if this phenomenon completely happens in stir zone. On the other hand stable grains in the stir zone have no effect on the mechanical properties of heat-treated joint.
机译：将T4回火的Al-4.5％Cu-1.5％Mg铝合金进行摩擦搅拌焊接，研究了异常晶粒长大对接头抗拉强度的影响。异常晶粒长大通常发生在焊后热处理期间。已经发现，如果这种现象完全在搅拌区发生，则热处理接头的抗拉强度和伸长率将显着增加。另一方面，搅拌区中稳定的晶粒对热处理接头的机械性能没有影响。

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