Acta Metall Sin  1998, Vol. 34 Issue (12): 1284-1288    DOI:

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MICROSTRUCTURAL CHARACTERISTICS AND WEAR PROPERLIES OF IN SITU FORMED TiC PARTICLE REINFORCED COATINGS BY LASER CLADDING

WU Xiaolei; CHEN Guangnan(Institute of Mechanics; The Chinese Academy of Sciences; Beijing 100080)Correspondent: WU Xiaolei; postdoctor Tel: 6B547527; Fax: 6B561284;E-mail: xlwu@ccs5.imech. ac. cnManuscript received 1998-03-05

WU Xiaolei; CHEN Guangnan(Institute of Mechanics; The Chinese Academy of Sciences; Beijing 100080)Correspondent: WU Xiaolei; postdoctor Tel: 6B547527; Fax: 6B561284;E-mail: xlwu@ccs5.imech. ac. cnManuscript received 1998-03-05. MICROSTRUCTURAL CHARACTERISTICS AND WEAR PROPERLIES OF IN SITU FORMED TiC PARTICLE REINFORCED COATINGS BY LASER CLADDING. Acta Metall Sin, 1998, 34(12): 1284-1288.

Abstract References Related Articles Recommended Metrics Download:  PDF(2963KB)  Export:  BibTeX | EndNote (RIS)       Abstract  A new method was realized to produce a Ni-alloy composite coating reinforcedby in situ reacted and gradiently distributed TiC particles (TiCp) by one step laser cladding.TiCp was introduced by an in situ reaction of titanium and graphite during laser clad process.It was observed that the disperse TiCp with size of sub-micrometer formed in the layer. And,TiC. possessed density--gradient distribution and a maximum volume fraction of 38% at thelayer surface. Furthermore, the in situ generated TiCp/matrir interfaCes is found to keep cleanand free from deleterious surface reactions. The microhardness revealed a gradient variationwith the layer depth,and the highest value was 1250 HV0.2. The wear properties of the layeris significantly enhanced due to a large amount of TiCp and strong phase interface combinationwithout evidently increasing the friction coefficient. Key words:  laser cladding      in situ formation      TiC particle      composite material      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I12/1284 1 Cerri W,Martinella R.Mor G P.Surf Coat Technol.1991;49:40 2Hu C.Barnard L.Mridha S,Baker T N.J Mater Process Technol.1996;58:87 3 Kooper K P.J Vac Sci Technol,1986;4;2856 4Abbas G,West D R F.Wear.1991:143:353 5Abbas G.West D R F.Proc SPIE.1989;1132:237 6Westwood A R C.Metall Trans ,1988;19A:749 7Langan T J.Pickens J R.Scr Metall Mater.1991;25:2689 8Mitra R,Chiou W A.Weertman J R.Scr Metall Mater.1991;25;2829 9Rohatgi P K,Asthana R.J Met;1991;5:35 10Dhindaw B K,Stefanescu D M,Singh A K.Metall Trans,1988;19A:2829 11Lei T C.Ouyang J H.Pei Y T,Xhou Y.Mater Sci Technol.1995.11:520 12Matthews S T.Applications Of Lasers in Materials Processing.Metal Park,OH:ASM.1983:138 13 Boas M.Bamberger M.Reves G.Surf Coat Technol.1990;42:175U [1] FENG Kai, GUO Yanbing, FENG Yulei, YAO Chengwu, ZHU Yanyan, ZHANG Qunli, LI Zhuguo. 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