文献类型：期刊文献

英文题名：Effect of Zr addition on the microstructure and properties of Cu-10Cr in situ composites

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

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

年份：2009

卷号：30

期号：10

起止页码：4444

外文期刊名：MATERIALS & DESIGN

收录：;EI(收录号：20092712169162);WOS:【SCI-EXPANDED(收录号:WOS:000268453500060)】；

语种：英文

外文关键词：Chromium - Zirconium alloys - Chromium alloys - Ternary alloys - Copper alloys - Microstructure

摘要：The Cu-10Cr-0.4Zr alloy and the in situ composites based on the alloy were prepared. Microstructure evolution and mechanical properties of Cu-10Cr-0.4Zr in situ composites were investigated. The results showed that the addition of 0.4 wt.% Zr in the Cu-10 wt.% Cr in situ composites gave birth to smaller ascast Cr dendrites, which led to finer filaments at higher strain ratios. The ultimate strength of Cu-10Cr0.4Zr composites reached 1089 MPa at draw ratio of eta = 6.2. however that of Cu-10Cr prepared by the same procedure was only 887 MPa. The increasing strength of Cu-10Cr-0.4Zr in situ composites could be attributed to the combination of Hall-Petch strengthening of closely spaced Cr filaments, the strengthening effect of Zr and the strengthened Cu matrix. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.