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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 10    No. 1    February 2000

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Laser induced TiC particle reinforced composite layer on Ti6Al4V and their microstructural characteristics①
ZHANG Song(张 松)1,2, WU Wei-tao(吴维山又)1,
WANG Mao-cai(王茂才)1, Dong Shi-yun(董世运)1

1. State Key Laboratoryfor Corrosion and Protection of Metals, Institute of Corrosion and
Protection for Metals, Chinese Academy of Sciences, Shengyang110015, P.R.China;
2. School of Materials Science and Engineering, ShenyangPolytechnic University,
Shengyang110023, P.R.China

Abstract:An in-situ synthesized TiC particle reinforced composite layer on Ti6Al4V were fabricated by laser induced reaction of the pre-placed mixed powders of Ti and Cr3C2. The microstructure of the composite layer was strongly related to the composition of original powders and also the laser processing parameters. Under certain processing parameters, the matrix of the composite layer was transferred from dualα+βto single phaseβwith increasing Cr3C2content in the
original powder mixture. The TiC particles were fine and uniformly dispersed in the matrix. Furthermore, the fine TiC particles show excellent compatibility with the matrix, thus offering good wear performance.

 

Key words: metallic composite ; TiC particles; in-situ forming; coating

ISSN 1672-7029
CN 43-1423/U

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