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《Transactions of Materials and Heat Treatment》 2007-S1
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Preparation,microstructure and properties of Cu-15wt%Cr alloy by high-energy ball milling

WANG De-bao~1 WU Yu-cheng~1 WANG Wen-fang~1 ZONG Yue~2 (1.School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China; 2.Composites Company,Hefei University of Technology,Hefei 230009,China)  
In this paper,Cu-15wt%Cr alloy powders were fabricated by using high-energy ball milling and then were consolidated via hot pressing.The microstructure of alloy powders,mechanical properties and conductivity of Cu-15wt%Cr alloy were investigated. Strengthening mechanism,the effect of aging time and hot-pressing temperature on microstructure and properties were studied.It was found that Cu(Cr) supersaturated solid solution was synthesized by high-energy ball milling,which the microstructure was fine and homogeneous,and had fine-grain,dispersion and precipitation strengthening effects after hot pressing.When hot-pressing temperature was at 900℃for 40min,electrical conductivity remains as high as 60%IACS,tensile strength and hardness were enhanced to about 1057MPa and 174.8 HV respectively.
【Fund】: 安徽省“十五”二期科技攻关项目(040020392);; 合肥市重点科技攻关项目(20051044);; 安徽省自然科学基金(070414180)
【CateGory Index】: TG113
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