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HUANG Zhiquan, DUAN Jiaxu, YANG Wei, ZHANG Haiyan. Study of impact energy on abrasive wear resistance of Fe-C-Mo-V hardfacing alloys[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(12): 80-85. DOI: 10.12073/j.hjxb.20200228001
Citation: HUANG Zhiquan, DUAN Jiaxu, YANG Wei, ZHANG Haiyan. Study of impact energy on abrasive wear resistance of Fe-C-Mo-V hardfacing alloys[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(12): 80-85. DOI: 10.12073/j.hjxb.20200228001

Study of impact energy on abrasive wear resistance of Fe-C-Mo-V hardfacing alloys

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  • Received Date: February 27, 2020
  • Available Online: January 06, 2021
  • Wear samples were prepared by hardfacing welding with Fe-C-Mo-V gas shielded flux-cored wire, and subjected to dynamic impact abrasive wear tests under different impact energy. Microstructures and wear scar characteristics of deposited metal were characterized by scanning electron microscopy with energy disperse spectroscopy, weight loss test, and laser scanning confocal microscopy to investigate the abrasive wear behavior of deposited metal under different impact energy. The results show that the microstructure of deposited metal is mainly composed of austenite, lamellar eutectic structure, and spherical VC hard phases. The wear loss of deposited metal, the roughness of the wear scar, and the depth of the wear scar gradually decrease with the increase of impact energy. The wear mechanism are the micro-cutting of the austenite matrix by the abrasive grains and plastic deformation. As the impact energy increases, the deposited metal undergoes work hardening, and a deformed martensite structure appears on the subsurface of the wear scar. Furthermore, the VC hard phase interacts with the lamellar eutectic structure to increase the hardness of the deposited metal, thereby improving the wear resistance of the matrix and enhancing the impact resistance.
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