Effect of laser in situ synthesis NbC on microstructure and wear resistance of 316L stainless steel cladding for wind turbine
ZHAO Qun1，ZHAO Jinfang2，ZHU Shuang1，WANG Lin1
（1. School of Mechanical Engineering, Shenyang Institute of Engineering, Shenyang 110870, China;2. School of
Civil Aviation, Shenyang Aerospace University, Shenyang 110870, China）
Abstract：In order to improve the hardness and wear resistance of 316L stainless steel coating, 316L-10%Nb-
5%Cr3C2 metal matrix composite coating was prepared on 304 stainless steel surface by laser cladding technology.
The phase composition, microstructure, element distribution, microhardness and wear resistance of the composite
coating were studied systematically. The results show that the composite coating consists of γ -Fe, Fe-Cr
solid solution, NbC ceramic particles and Cr7C3. The microhardness of 316L-10%Nb-5%Cr3C2 composite coating
is significantly higher than that of 316L coating, which is about (394±10.7) HV0.3, about 1.65 times of 316L coating.
The wear test shows that the wear resistance of the composite cladding is about 2 times higher than that of
the 316L coating under dry sliding condition. The wear mechanism of composite cladding layer is abrasive wear.
2023, Vol. 33 
