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《Journal of Materials Engineering》 2013-11
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Effect of Machining Techniques on Tension-compression Yield Asymmetry of AZ61Magnesium Alloy

WANG Qing;WANG Jing-feng;HUANG Song;LI Lin-jun-nan;GENG Tie;PAN Fu-sheng;National Engineering Research Center for Magnesium Alloys,Chongqing University;College of Mechanical & Electrical Engineering,Henan University of Technology;  
Three kinds of machining techniques including one pass extrusion,two passes extrusion and forging after extrusion were adopted to deform AZ61 magnesium alloy,then mechanical property,tension and compression yield asymmetry were studied.The results indicate that,extrusion can refine the grain size of AZ61magnesium alloy,but the grain is coarse by forging after extrusion.Due to{0002}basal plane orientation strengthened by two passes extrusion,tensile yield strength increases while compressive yield strength decreases,which deteriorate the tension and compression asymmetry.After forging deformation,altering the basal plane texture,while coarsening the grains partly at the same time,tensile yield strength of AZ61 magnesium alloy dropped,while compressive yield strength keep almost the same.As a result,tension and compression yield asymmetry was improved.
【Fund】: 国家科技支撑计划课题(2011BAE22B04);; 新世纪优秀人才支持计划资助(NCET-11-0554)
【CateGory Index】: TG379
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