W-Cu-Zr三元系相图900℃等温截面的测定  

900 ℃ Isothermal Section of W-Cu-Zr Ternary System

作　　者：龚洁明 余津要 周哲[1] 汪沅[1] 易茂中[1] 

机构地区：[1]中南大学轻质高强结构材料重点实验室,湖南长沙410083 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《广东化工》2017年第11期15-17,35,共4页Guangdong Chemical Industry

基　　金：XXX国家重大工程项目相关研究(GFZX0101040101-2012C20X)

摘　　要：采用真空电弧熔炼法熔炼W-Cu-Zr三元系合金,在900℃下退火90天后取出样品立即淬火,采用XRD、SEM等测定其平衡显微组织。实验测得W-Cu-Zr三元系900℃等温截面中有4个三相区:Cu51Zr14+(Cu)+(W)、(W)+Cu51Zr14+Cu8Zr3、CuZr_2+W_2Zr+Cu_8Zr_3、(Zr)+CuZr_2+W_2Zr,1个两相区:(W)+W_2Zr。W-Cu-Zr三元体系中没有检测到三元化合物。二元化合物Cu_(51)Zr_(14)、Cu_8Zr_3、CuZr_2中最大的含W量分别为2.88、1.15、1.7 at.%;W2Zr中最大的含Cu量为7.71 at.%。W-Cu-Zr ternary system alloys were prepared by vacuum arc-melting method, the alloys annealed at 900 ℃for 90 days were quenched immediately, equilibrium microstrueture were determined by XRD and SEM, et al. Four three-phase regions, Cu51Zr14＋（Cu）＋（W）, （W）＋Cu51Zr14＋Cu8Zr3, CuZr2＋W2Zr＋Cu8Zr3, （Zr）＋CuZr2＋W2Zr and one two-phase region （W）＋W2Zr have been determined experimentally in the isothermal section of the W-Cu-Zr ternary system at 900 ℃. No ternary compound was detected in W-Cu-Zr ternary system.The maximum solubility of W in Cu51Zr14, Cu8Zr3, CuZr2 were 2.88, 1.15, 1.7 at.%, respectively, the maximum solubility of Cu in W2Zr was 7.71 at.%.

关 键 词：相图 W-Cu-Zr三元系 900℃等温截面 显微组织 

分 类 号：TG146[一般工业技术—材料科学与工程]