分级热处理对Zn-40Al-4Cu合金组织和性能的影响  

Influence of Step Solution Heat Treatment on Microstructure and Performance of Zn-40Al-4Cu Alloys

作　　者：汪兴娟[1] 江宇[1] 何顺荣[1,2] 王久林[1] 刘伟伟[1] 董雄英[1] 宣自军[1] 

机构地区：[1]合肥工业大学材料科学与工程学院 [2]中国科学技术大学热科学与能源工程系

出　　处：《特种铸造及有色合金》2013年第6期555-558,共4页Special Casting & Nonferrous Alloys

基　　金：合肥工业大学创新资助项目(2012CXCY052);中央高校基本科研业务费专项资金资助项目

摘　　要：研究了分级热处理工艺对Zn-40Al-4Cu合金组织和耐磨性的影响。结果表明,分级热处理工艺能改善合金微观组织及成分均匀性,使α枝晶转变为块状,α+η共析体由片层状转变为颗粒状,ε相尺寸减小,形状变得圆整,大大增加了Zn-40Al-4Cu合金的硬度,减小摩擦因数,降低磨损量。Influences of the step solution heat treatment on microstructure and wear resistance of Zn- 40A1-4Cu alloy were investigated. The results show that step solution treatment can improve the microstructure and homogeneous composition of Zn-40A1-4Cu alloy, where a dendrite is converted into block one, and α＋η cutectoid structure is transformed from lamellar to well mixed particles. The size of ε phase is reduced with more round shape. In addition, step heat treatment can increase greatly the hardness of Zn-40A1-4Cu alloy and reduce the coefficient of friction and wear loss.

关 键 词：分级固溶 热处理 Zn-40Al-4Cu合金 耐磨性 

分 类 号：TG166[金属学及工艺—热处理]