| Effect of Mg on microstructures and properties of Al-Mg-Si-Cu aluminium alloys for automotive body sheets |
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| 引用本文： | 刘宏 宋文举 赵刚 刘春明 左良. Effect of Mg on microstructures and properties of Al-Mg-Si-Cu aluminium alloys for automotive body sheets[J]. 中国有色金属学会会刊, 2005, 15(1): 30-34 |
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| 作者姓名： | 刘宏 宋文举 赵刚 刘春明 左良 |
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| 作者单位： | [1]SchoolofMaterialsandMetallurgy,NortheasternUniversity,Shenyang110004,China／／SchoolofMechanicalandElectricalEngineering,ShangdongInsituteofLightIndustry,Ji＇nan250100,China [2]SchoolofMaterialsandMetallurgy,NortheasternUniversity,Shenyang110004,China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，Science and Technology of Ministry of Education of China |
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| 摘 要： | The effects of variation of Mg content on microstructures, the tensile properties and the formability of Al-Mg-Si-Cu alloys for automotive body sheets were investigated by means of scan electron microscopy, optical metallographic analysis, tensile and Ericsson tests. The results show that for Al-Mg-Si-Cu aluminium alloys with excessive Si, with an increment of Mg content, the strength enhances, the specific elongation and Erisson values of alloys decrease, and the number of Mg2 Si constituent increases and that of AI(MnFe)Si type constituents reduces. Al-Mg-Si-Cu aluminium alloys with excessive Si for automotive body sheets can present obviously the paint bake hardenability during the paint hake cycle (i. e. artificial aging at 170℃ for 30 min immediately after the solution treatment and quenching). Suitable Mg content should be controlled in the range of 0.8% and 1.2%(mass fraction).
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| 关 键 词： | 铝镁硅铜合金 自动机体板 硅化镁 冲压成型 热处理 |
Effect of Mg on microstructures and properties of Al-Mg-Si-Cu aluminium alloys for automotive body sheets |
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| LIU Hong,SONG Wen-ju,ZHAO Gang,LIU Chun-ming,ZUO Liang. Effect of Mg on microstructures and properties of Al-Mg-Si-Cu aluminium alloys for automotive body sheets[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(1): 30-34 |
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| Authors: | LIU Hong SONG Wen-ju ZHAO Gang LIU Chun-ming ZUO Liang |
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| Abstract: | The effects of variation of Mg content on microstructures,the tensile properties and the formability of Al-Mg-Si-Cu alloys for automotive body sheets were investigated by means of scan electron microscopy,optical metallographic analysis,tensile and Ericsson tests.The results show that for Al-Mg-Si-Cu aluminium alloys with excessive Si,with an increment of Mg content,the strength enhances,the specific elongation and Erisson values of alloys decrease,and the number of Mg2 Si constituent increases and that of Al(MnFe)Si type constituents reduces.Al-MgSi-Cu aluminium alloys with excessive Si for automotive body sheets can present obviously the paint bake hardenability during the paint bake cycle (I.e.artificial aging at 170 ℃ for 30 min immediately after the solution treatment and quenching).Suitable Mg content should be controlled in the range of 0.8% and 1.2 % (mass fraction). |
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| Keywords: | Al-Mg-Si-Cu alloys automotive body sheets Al(MnFe) Si Mg2 Si stamping formability |
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