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| Effect of Titanium on Microstructure and Wear Resistance of High-chromium Hardfacing Alloys |
| LIU Yue1 ZHANG Guoshang1** WEI Shizhong2 LI Jiwen1 XU Liujie2 REN Yanyan1 |
1. School of Materials Science & Engineering, Henan University of Science & Technology, Luoyang 471003
2. Henan Engineering Research Center for Wear of Material, Henan University of Science & Technology,
Luoyang 471003 |
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Cite this article:
LIU Yue ZHANG Guoshang** WEI Shizhong LI Jiwen XU Liujie REN Yanyan. Effect of Titanium on Microstructure and Wear Resistance of High-chromium Hardfacing Alloys. Chinese Journal of Materials Research, 2013, 27(6): 641-646.
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Abstract Alloy powders were deposited on the surface of ASTM G3101 by the method of welding wire-alloy power block hardfacing. The microstructures and wear resistance of hardfacing layer was characterized by x-ray diffraction(XRD), scanning electron microscope(SEM), energy dispersive X-ray analysis(EDS), Macroscopic hardness meter, and spectrometer. Effect of titanium on microstructure and wear resistance of high-chromium hardfacing alloys was investigated. The results show that the high quality metallurgical bonding of substrate and deposited layer was obtained by metallurgical reaction during gas metal arc welding (GMAW) process, and the microstructure of welding wire-alloy power block 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) besides little amount of retained CFe15.1 austenite (Fe-C)(FCC) matrix. The hardness increases rapidly with titanium content increasing, hardfacing layer hardness value reached 60 when it is less than 3% (mass%, similarly hereafter), on the contrary, wear loss of the hardfacing layers decrease with increasing of titanium in the hardfacing layer.
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| Fund: Supported by the Key Scientific and Technological Project of Henan Province No.112102213117. |
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