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《Rare Metal Materials and Engineering》 2010-12
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Effects of Mn Content on Microstructure and Mechanical Properties of Mg-Zn-Mn Wrought Alloys

Zhang Dingfei1,2,Qi Fugang1,2,Shi Guoliang1,2,Dai Qingwei1,2(1.Chongqing University,Chongqing 400045,China)(2.National Research Center for Magnesium Alloys,Chongqing 400044,China)  
By observing the microstructures and measuring mechanical properties of three kinds of Mg-6Zn-XMn wrought magnesium alloys,the effects of Mn content on microstructures and mechanical properties of Mg-Zn-Mn magnesium alloy was studied.The results show that Mn element distributes dispersively in the matrix mainly as pure Mn particles which can hamper the grain growth,i.e.the grains become finer with Mn content increasing.Mn content has a certain impact on the yield strength of the three alloys,that is,the yield strength increases with Mn content increasing,and the increment of the extruded and the two-stage aged alloys are 14% and 5%,respectively.On the other hand,Mn content has no obvious effect on the tensile strength and elongation of T6 and T4+2-stage aged alloys.The alloy with 0.68wt% Mn after two-stage aging has better overall mechanical properties,whose tensile strength is the highest,360 MPa,and whose elongation is 5.2%.
【Fund】: 国家“973”重大基础研究项目(2007CB613700);; 国家“十一五”科技支撑计划重点项目(2007BAQ00134-04);; 国家杰出青年科学基金(50725413)
【CateGory Index】: TG146.22
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【Citations】
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1 DAI Qing-wei1,ZHANG Ding-fei1,2,YUAN Wei1,SHI Guo-liang1,DUAN Hong-ling1(1 College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China;2 National Research Center for Magnesium Alloys,Chongqing 400044,China);Researches on Extrusion,Microstructure and Mechanical Properties of New Mg-Zn-Mn Alloy[J];Journal of Materials Engineering;2008-04
【Co-citations】
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