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Volume 25 Issue 9
Sep.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(9): 1060-1069
Ping-hu Chen, Yi-bo Li, Rui-qing Li, Ri-peng Jiang, Song-sheng Zeng,  and Xiao-qian Li, Microstructure, mechanical properties, and wear resistance of VCp-reinforced Fe-matrix composites treated by Q&P process, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1060-1069. https://doi.org/10.1007/s12613-018-1657-9
Cite this article as:
Ping-hu Chen, Yi-bo Li, Rui-qing Li, Ri-peng Jiang, Song-sheng Zeng,  and Xiao-qian Li, Microstructure, mechanical properties, and wear resistance of VCp-reinforced Fe-matrix composites treated by Q&P process, Int. J. Miner. Metall. Mater., 25(2018), No. 9, pp. 1060-1069. https://doi.org/10.1007/s12613-018-1657-9
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研究论文

Microstructure, mechanical properties, and wear resistance of VCp-reinforced Fe-matrix composites treated by Q&P process

  • College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

  • State Key Laboratory of High Performance Complex Manufacturing, Changsha 410083, China

  • Light Alloy Research Institutes, Central South University, Changsha 410083, China

  • Valin ArcelorMittal Automotive Steel Co., Ltd., Loudi 417000, China

  • 通讯作者:

    Yi-bo Li    E-mail: yibo.li@csu.edu.cn

    Song-sheng Zeng    E-mail: zsscsu@sina.com

  • A quenching and partitioning (Q&P) process was applied to vanadium carbide particle (VCp)-reinforced Fe-matrix composites (VC-Fe-MCs) to obtain a multiphase microstructure comprising VC, V8C7, M3C, α-Fe, and γ-Fe. The effects of the austenitizing temperature and the quenching temperature on the microstructure, mechanical properties, and wear resistance of the VC-Fe-MCs were studied. The results show that the size of the carbide became coarse and that the shape of some particles began to transform from diffused graininess into a chrysanthemum-shaped structure with increasing austenitizing temperature. The microhardness decreased with increasing austenitizing temperature but substantially increased after wear testing compared with the microhardness before wear testing; the microhardness values improved by 20.0% ±2.5%. Retained austenite enhanced the impact toughness and promoted the transformation-induced plasticity (TRIP) effect to improve wear resistance under certain load conditions.
    • Research Article

    Microstructure, mechanical properties, and wear resistance of VCp-reinforced Fe-matrix composites treated by Q&P process

    + Author Affiliations
      Abstract
    • A quenching and partitioning (Q&P) process was applied to vanadium carbide particle (VCp)-reinforced Fe-matrix composites (VC-Fe-MCs) to obtain a multiphase microstructure comprising VC, V8C7, M3C, α-Fe, and γ-Fe. The effects of the austenitizing temperature and the quenching temperature on the microstructure, mechanical properties, and wear resistance of the VC-Fe-MCs were studied. The results show that the size of the carbide became coarse and that the shape of some particles began to transform from diffused graininess into a chrysanthemum-shaped structure with increasing austenitizing temperature. The microhardness decreased with increasing austenitizing temperature but substantially increased after wear testing compared with the microhardness before wear testing; the microhardness values improved by 20.0% ±2.5%. Retained austenite enhanced the impact toughness and promoted the transformation-induced plasticity (TRIP) effect to improve wear resistance under certain load conditions.
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