典型文献
Effects of trace calcium and strontium on microstructure and properties of Cu-Cr alloys
文献摘要：
Cu-0.57Cr-0.01Ca and Cu-0.58Cr-0.01Sr(wt.％)alloys were fabricated and processed by thermo-mechanical treatment.Their mechanical and electrical properties and microstructure were investigated in detail and compared with those of a Cu-0.57Cr(wt.％)alloy.The results showed that the softening resistance of the Cu-Cr alloy was significantly improved by the additions of Ca and Sr elements.Compared with the Cu-Cr alloy,the deformation microstructure of the Cu-Cr-Ca and Cu-Cr-Sr alloys was more difficult to recrystal-lize at elevated temperatures,and the Cr precipitates in the Cu-Cr-Ca and Cu-Cr-Sr alloys were smaller in size and had an FCC structure at any given aging state.The high strengths of the Cu-Cr-Ca and Cu-Cr-Sr alloys were mainly attributed to the dislocation strengthening provided by high-density dislocations and the precipitate strengthening provided by fine Cr precipitates.First-principles calculation showed that the segregations of Ca and Sr atoms at interface between Cr precipitates and copper matrix were favorable in energetics.This segregation effectively hindered the growth of Cr precipitates and significantly enhanced the pinning effect on the motion of dislocations and subgrain boundaries,eventually leading to the im-provement in the softening resistance of the Cu-Cr alloy.
文献关键词：
中图分类号：
作者姓名：
Muzhi Ma;Zhu Xiao;Xiangpeng Meng;Zhou Li;Shen Gong;Jie Dai;Hongyun Jiang;Yanbin Jiang;Qian Lei;Haigen Wei
作者机构：
School of Materials Science and Engineering,Central South University,Changsha 410083,China;Key Laboratory of Non-ferrous Metal Materials Science and Engineering,Ministry of Education,Changsha 410083,China;Ningbo Boway Alloy Material Co.,Ltd.,Ningbo 315135,China;State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China;Zhejiang Tianning Alloy Material Co.,Ltd.,Jinhua 321002,China;Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China
文献出处：
引用格式：
[1]Muzhi Ma;Zhu Xiao;Xiangpeng Meng;Zhou Li;Shen Gong;Jie Dai;Hongyun Jiang;Yanbin Jiang;Qian Lei;Haigen Wei-.Effects of trace calcium and strontium on microstructure and properties of Cu-Cr alloys)[J].材料科学技术（英文版）,2022(17):11-23
A类：
57Cr,01Ca,58Cr,01Sr
B类：
Effects,trace,calcium,strontium,microstructure,properties,alloys,were,fabricated,processed,by,thermo,mechanical,treatment,Their,electrical,investigated,detail,compared,those,results,showed,that,softening,resistance,was,significantly,improved,additions,elements,Compared,deformation,more,difficult,recrystal,lize,elevated,temperatures,precipitates,smaller,size,had,FCC,any,given,aging,state,high,strengths,mainly,attributed,strengthening,provided,density,dislocations,fine,First,principles,calculation,segregations,atoms,interface,between,copper,matrix,favorable,energetics,This,effectively,hindered,growth,enhanced,pinning,motion,subgrain,boundaries,eventually,leading,provement
AB值：
0.448623
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