PHASE CONSTITUENTS AND MICROSTRUCTURE OF Ti3Al/Fe3Al + TiN/TiB2 COMPOSITE COATING ON TITANIUM ALLOY

被引:11
作者
Li, Jianing [1 ]
Chen, Chuanzhong [1 ]
Zhang, Cuifang [1 ]
机构
[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China
关键词
Laser cladding; titanium aluminides; surface modification; titanium alloys; MATRIX COMPOSITE; TI; ALLOY; PERFORMANCE; TI-6AL-4V; STEEL;
D O I
10.1142/S0218625X11014527
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Laser cladding of the Fe3Al + B4C/TiN + Al2O3 pre-placed powders on the Ti-6Al-4V alloy can form the Ti3Al/Fe3Al + TiN/TiB2 composite coating, which improved the wear resistance of the Ti-6Al-4V alloy surface. In this study, the Ti3Al/Fe3Al + TiN/TiB2 composite coating has been researched by means of X-ray diffraction and scanning electron microscope. It was found that during the laser cladding process, Al2O3 can react with TiB2, leading to the formations of Ti3Al and B. This principle can be used to improve the Fe3Al + B4C/TiN laser-cladded coating on the Ti-6Al-4V alloy. Furthermore, during the cladding process, C consumed the oxygen in Fe3Al + B4C/TiN + Al2O3 molten pool, which retarded the productions of the redundant metal oxides.
引用
收藏
页码:103 / 108
页数:6
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