Microstructure and Properties of Plasma Cladding Fe-based Wear-resisting Alloy Containing Submicron NbC
WANG Zhi-hui1, ZHAO Xue-fei1, HE Ding-yong1, JIANG Jian-min1, ZHAO Qiu-ying2, LIU Fei1
1. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;
2. Mechanical Engineering Postdoctoral Research Station, Beijing University of Technology, Beijing 100124, China
Abstract：Fe-Cr-B-C-Nb cladding layer containing submicron NbC were prepared by PTA on Q235 steel, a series of alloys containing superfine NbC, eutectic boride, NbC + eutectic boride, NbC+primary Fe2B hardphase were designed respectively to study the effect of hardphase of different size on microstructure and properties of Fe-Cr-B-C-Nb cladding layer, and compared with the Fe-Cr-C hardfacing alloy in market. The results show that the fine hardphase can conduce to improve the impact resistance and the wear resistance of the alloy containing submicron NbC and eutectic boride is 4 times more than that of Fe-Cr-C, and the impact resistance is better than that of Fe-Cr-C.
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