多级雾化Cu-Cr-Zr-Mg合金的组织和性能  

Microstructure and Properties of Multistage Atomization Rapidly Solidified Cu-Cr-Zr-Mg Alloy

作　　者：康布熙[1,2] 陈新芳 刘平[1,2] 黄金亮 曹兴国[1,2] 殷标 

机构地区：[1]洛阳工学院材料工程系 [2]中信重机公司

出　　处：《洛阳工学院学报》1999年第2期10-13,共4页Journal of Luoyang Institute of Technology

基　　金：国家自然科学基金

摘　　要：对多级雾化法制取的Ｃｕ－Ｃｒ－Ｚｒ－Ｍｇ合金粉末热挤压成形及时效处理后的组织及性能的研究表明：合金粉末经真空封装后，在４２０℃按１０：１的挤压比成形后，合金密度达理论密度值的９８％以上，并且组织中存在着与母相保持共格关系的Ｃｒ相和Ｃｕ５Ｚｒ。经５００℃时效１ｈ后，硬度和导电率分别达ＨＶ１７０及８１％ＩＡＣＳ。Cu-Cr-Zr-Mg alloy powder were produced by multistage atomization RS and were consolidated by warm extrusion. The microstructure and properties of the extruded bar before and after aging treatment were investigated. The results have shown that the density of the extruded bars can reach to above 98% of the theoretica lone under the conditions of vacuum seal and preheating temperature about 420℃ and extrusion ratio 10:1. The Cr phase and Cu 5Zr precipitates coherent with the matrix were found in the aged micorstructure. Upon aging at 500℃ for 1h, the microhardness and electrical conductivity reach about HV170 and 81%IACS, respectively.

关 键 词：沉淀硬化 显微硬度 铜合金 组织 多级雾化法 

分 类 号：TG146.11[一般工业技术—材料科学与工程]