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Effect of microelements on microstructures and properties of Al-1·2Mg-1·3Si-0·6Cu-0·3Mn alloy

Effect of microelements on microstructures and properties of Al-1.2Mg-1.3Si-0.6Cu-0.3Mn alloy
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摘要 The effects of impurity element of Fe and microelements of Zn, Cr and Ti on the constituents, dispersoids, grain size, mechanical properties and formability of Al-1.3Mg-1.2Si-0.6Cu-0.3Mn alloy were investigated in the present work by analyzing microstructures, phase composition, mechanical tests. The results indicated that with the increase of Fe content, the insoluble constituents increased, and the mechanical properties and r15 of alloy sheets debased, which can be recovered by the addition of microelements Zn, Cr and Ti. Al-1.3Mg-1.2Si-0.6Cu-0.3Mn alloy sheets in the T4 temper are difficult to strengthen with paint-bake treatment in automobile factory. The effects of impurity element of Fe and microelements of Zn, Cr and Ti on the constituents, dispcrsoids, grain size, mechanical properties and formability of Al-1. 3Mg-l. 2Si-0. 6Cu-0. 3Mn alloy were investigated in the present work by analyzing microstructures, phase composition, mechanical tests. The results indicated that with the increase of Fe content, the insoluble constituents increased, and the mechanical pmperties and r15 of alloy sheets debased, which can be recovered by the addition of microelements Zn, Cr and Ti. Al-1. 3Mg-1. 2Si-0. 6Cu-0. 3Mn alloy sheets in the T4 temper are difficult to strengthen with paint - bake treatment in automobile factory.
作者 田妮 刘春明
机构地区 东北大学
出处 《材料与冶金学报》 CAS 2006年第4期283-287,共5页 Journal of Materials and Metallurgy
关键词 铝合金 微量元素 微观结构 可成型性 6000 series aluminum alloy constituents dispersoids microelement formability paint-bake
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