热处理对锡青铜合金组织和性能的影响  

Effects of Heat Treatment on Microstructure and Performance of Tin Bronze Alloy

作　　者：林国标[1] 王自东[1] 张伟[1] 李文钱[1] 张鸿[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《铸造》2011年第3期287-289,293,共4页Foundry

摘　　要：以ZQSn10-2锡青铜合金成分为基础,研究加入少量的Ni和后续扩散退火热处理对合金组织结构和性能的影响。研究结果表明:合金组织为α-Cu固溶体和δ相,δ相沿晶界析出,含有较高的Sn和Ni,通过500～600℃热处理,部分δ相扩散固溶到α-Cu相中,使得合金强度和伸长率大幅度提高。The microstructure and mechanical properties of a tin bronze with the composition close to that of ZQSn10-2 have been studied by adding a small amount of Ni and diffusion annealing treatment.Experimental results show that the alloy is composed of α-Cu solid solution and δ phase forming along grain boundary which contains more amount of Sn and Ni.The heat treatment at 500-600 ℃ enables a part of δ phase dissolve into α-Cu through diffusion,resulting in the much increase of both tensile strength and elongation of the alloy.

关 键 词：扩散热处理 力学性能 锡青铜 

分 类 号：TG166.2[金属学及工艺—热处理]