粉末冶金Cu-Zr合金的微结构及性能研究  

Microstructure and Properties of Powder Metallurgy Cu-Zr Alloys

作　　者：邓景泉[1] 吴玉程[1] 于福文[1] 王德广[1] 

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《稀有金属材料与工程》2009年第A01期205-208,共4页Rare Metal Materials and Engineering

基　　金：安徽省"十五"二期科技攻关项目(040020392);合肥市重点科技攻关项目(20051044);安徽省自然科学基金(070414180)

摘　　要：采用高纯、高速N2(99.999%)流作为介质淬火处理在真空下固溶的粉末冶金Cu-Zr合金,然后时效处理。用HV、HB、XRD、TEM、SEM、EDS等来表征不同状态下的合金组织性能。结果表明:随着固溶时间的增加,合金的布氏硬度(HB)和导电率减小,而显微硬度(HV)增加;铜锆合金时效析出Cu2Zr,时效处理时间小于12h时,合金的HB和导电率增加而HV减小,时效处理时间大于12h时,合金的HB和HV减小而导电率增加,沉淀相长大。A novel quenching medium-high speed flow of high purity N2 was used in the paper. Cu-Zr alloys produced by powder metallurgy was solution heat treated in vacuum and quenched in the high speed flow of high purity N2 and then aged for different time. HV, HB, TEM, SEM, EDS were used to characterize the structures and properties. The results show that with increasing of SHT time, HB and electrical conductivity decreases while HV increases. When the aging time is shorter than 12 h, HB and electrical conductivity increases while HV decreases; when the aging time is longer than 12 h, HB and HV decrease while electrical conductivity increases because of precipitates coarsening. The precipitation phase is Cu2Zr.

关 键 词：固溶处理 时效处理 粉末冶金 CU-ZR合金 

分 类 号：TG131[一般工业技术—材料科学与工程]