Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第10卷    第z1期    总第100期    1999年10月

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文章编号:1004-0609(1999)s1-0282-07
CuZnAl合金摩擦过程中的扩散与相变
周晓霞    刘正义

(广州冷机公司电冰箱压缩机研究所,广州 510470)

摘 要:     对CuZnAl形状记忆合金摩擦过程中的组织及成分变化进行了研究。结果表明:CuZnAl形状记忆合金在急冷急热、强烈变形的摩擦过程中发生了由单一的M18R马氏体β' 相向αβ双相平衡组织的转变;当摩擦条件较“缓和”时,沿摩擦表面形成αβ交替出现的组织;当摩擦条件较“恶劣”时在摩擦层表层出现β相层,由表向内依次为α相层、αβ双相层、交叉马氏体层。此时β相容易从基体中剥落,合金的耐磨性低。

 

关键字: CuZnAl形状记忆合金    摩擦磨损     扩散    相变  

DIFFUSION AND PHASE TRANSFORMATION OF CuZnAl ALLOY DURING FRICTION
Zhou Xiaoxia and Liu Zhengyi

Guangzhou Refrigeration Co., Ltd. Guangzhou 510470, P. R. China

Abstract:The changes on microstructure and composition in Cu-Zn-Al shape memory alloy during friction have been investigated. It is shown that M18R martensite transforms into α+β when cooling, heating rapidly, and deforming strongly during friction test. In mild friction, α and β phases appear alternately along the surface. On the contrary, in severe friction, the phase layers present from the outmost surface inward are: β, α, α+β, cross-martensite subsequently. In this case, it is easy for β phase to breake away, thus results in poor wearing resistance.

 

Key words: CuZnAl shape memory alloy; friction and wear; diffusion; phase transformation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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