文献类型：会议论文

英文题名：Deformation Processing and Mechanical Properties of Cu-10Cr-0.4Zr in situ Composite Microwires

作者：Deng, Jianqi[1];Zhang, Xiuqing[1];Shang, Shuzhen[1];Zhao, Zuxin[1];Ye, Yifu[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

会议论文集：Annual Meeting of Chinese-Materials-Research-Society

会议日期：SEP 12-17, 2009

会议地点：Suzhou, PEOPLES R CHINA

语种：英文

外文关键词：in situ composite; deformation processing; microstructure; properties

摘要：The Cu-10Cr-0.4Zr in situ composite microwires were prepared by cast and cold drawing procedure. Deformation processing and mechanical properties of Cu-10Cr-0.4Zr composites were investigated. The results showed that the additional 0.4wt. %Zr in the Cu-10Cr in situ composite microwires gave birth to smaller as-cast Cr phases, which led to refined filaments in the matrix at higher drawing strains. As the drawing strains increased, the Cr filaments were constrained to fold or twist (even overlapped together) on longitudinal sections, and the Cr filaments become homogeneity and refinement at the longitudinal sections at the same time. At eta=6.2, the thickness of Cr filaments reached 250-300nm, and the ultimate strength of Cu-10Cr-0.4Zr composites reached 1089 MPa. And the predicted strength using Hall-Petch equation was 1037 MPa, which was in reasonably good agreement with the observed strength (1089 MPa).