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6期    总第39期    2000年12月

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文章编号:1004-0609(2000)06-0785-05
TiAl合金激光表面合金化涂层的组织与耐磨性
刘秀波, 于利根, 王华明

(北京航空航天大学 激光材料加工与表面工程实验室, 北京 100083)

摘 要:   以NiCrWC混合粉末为原料,对TiAl合金进行激光表面合金化处理,制得了以γNiCrAlTi镍基固溶体为基体,以TiC,W2C及M23C6 为增强相的耐磨复合材料表面改性层。分析了改性层的组织,并测试了其在滑动摩擦试验条件下的耐磨性。实验结果表明,激光表面合金化涂层具有较高的硬度及较好的耐磨性。

 

关键字:   TiAl合金; 激光表面合金化;显微组织; 耐磨性

Microstructures and wear resistance of laser surfacealloyed composite coatings on TiAl alloy
LIU Xiubo, YU Ligen, WANG Huaming

Laboratory of Laser Materials Processing and Surface Engineering,Beijing University of Aeronautics and Astronautics, Beijing 100083, P.R.China

Abstract:γNiCrAlTi/TiCW2CM23C6 composite coatings were fabricatedon γTiAl intermetallic alloy by laser surface alloying withNiCrWC alloy powder precoatings. Microstructures of the composite coatings were investigated by OM, SEM, XRD and EDS and the wear resistance of the laser treated samples were evaluated under full dry sliding friction condition. The results show that the lasersurface alloyed composite coatings have high hardness and good wear resistance.

 

Key words: TiAl alloy; laser surface alloying; microstructure; wear resistance

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

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

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