Microstructure and Wear Resistance of Fe-Cr-C Hardfacing Alloy Reinforced by Titanium Carbonitride |
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| Authors: | S Z Wei Y Liu G S Zhang L J Xu J W Li Y Y Ren |
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| Affiliation: | 1. Henan Engineering Research Center for Wear of Material, Henan University of Science &2. Technology, Luoyang 471003, China;3. State Key Laboratory of Solidification Processing, C/C Composites Technology Research Center, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | In order to improve the wear resistance of Fe-Cr-C hardfacing alloy, titanium carbonitride was introduced in situ and a TiC-Tix(C,N)y coating was deposited on the surface of ASTM G3101 steel by a gas metal arc welding process. The microstructure and wear resistance of the hardfacing layer were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), macroscopic hardness meter, spectrometry, and transmission electron microscopy (TEM). The results show that the hardfacing layers mainly consist of (Cr,Fe)7C3, TiC carbides, Tix(C,N)y carbonitrides, and α-Fe (C0.14Fe1.86 and C0.12Fe1.88 martensite) (BCT) in addition to a low content of retained CFe15.1 austenite (FCC). The titanium carbonitride–reinforced coating has high hardness and excellent wear resistance under dry sliding wear test conditions. |
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| Keywords: | Carbonitride Hardfacing Alloy Microstructure Wear Resistance |
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