Microstructural evolution and properties of a Cu-Cr-Ag alloy during continuous manufacturing process

作     者：Gao-Lei Xu Li-Jun Peng Guo-Jie Huang Hao-Feng Xie Zhen Yang Xue Feng Xiang-Qian Yin Xu-Jun Mi Gao-Lei Xu;Li-Jun Peng;Guo-Jie Huang;Hao-Feng Xie;Zhen Yang;Xue Feng;Xiang-Qian Yin;Xu-Jun Mi

作者机构：State Key Laboratory of Nonferrous Metals and ProcessesGRIMAT Engineering Institute Co.Ltd.Beijing101417China Zhejiang Libo Industrial Co.Ltd.Shaoxing312050China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第8期

页      面：2213-2220页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Key R&D Program of China(No.2016YFB0301400) the National Natural Science Foundation of China(No.51601017) 

主　　题：Cu-Cr-Ag alloy Upward continuous casting Continuous extrusion Microstructure Physical properties 

摘      要：Microstructure evolution and properties of a Cu-Cr-Ag alloy during the continuous manufacturing process were investigated in detail by scanning electron microscopy(SEM)and transmission electron microscopy(TEM)in the *** Cu-Cr-Ag alloy rod with uniform compositions is fabricated by upward continuous casting *** of the Cr phases are observed in the ascast *** the continuous extrusion process,the severe shear deformation and the dynamic aging *** average grain size of as-extruded alloy is much smaller than that of as-cast *** fcc and bcc Cr precipitates appear in the *** interaction mode between dislocations and precipitates can be identified as Orowan bypass mode according to the TEM *** overall difference in the yield strength between as-cast and as-extruded Cu-Cr-Ag alloy is attributed to solid solution strengthening,grain refinement strengthening,precipitation hardening and working hardening.