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Volume 25 Issue 6
Jun.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(6): 623-629
Chao Gu, Yan-ping Bao, Peng Gan, Min Wang,  and Jin-shan He, Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regime, Int. J. Miner. Metall. Mater., 25(2018), No. 6, pp. 623-629. https://doi.org/10.1007/s12613-018-1609-4
Cite this article as:
Chao Gu, Yan-ping Bao, Peng Gan, Min Wang,  and Jin-shan He, Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regime, Int. J. Miner. Metall. Mater., 25(2018), No. 6, pp. 623-629. https://doi.org/10.1007/s12613-018-1609-4
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研究论文

Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regime

  • State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

  • Steel Institute, RWTH Aachen University, Aachen 52072, Germany

  • 通讯作者:

    Yan-ping Bao    E-mail: baoyp@ustb.edu.cn

  • This work aims to investigate the effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue (VHCF) regime. The size and type of inclusions in the steel were quantitatively analyzed, and VHCF tests were performed. Some fatigue cracks were found to be initiated in the gaps between inclusions (Al2O3, MgO-Al2O3) and the matrix, while other cracks originated from the interior of inclusions (TiN, MnS). To explain the related mechanism, the tessellated stresses between inclusions and the matrix were calculated and compared with the yield stress of the matrix. Results revealed that the inclusions could be classified into two types under VHCF; of these two, only one type could be regarded as holes. Findings in this research provide a better understanding of how inclusions affect the high cycle fatigue properties of bearing steel.
    • Research Article

    Effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue regime

    + Author Affiliations
      Abstract
    • This work aims to investigate the effect of main inclusions on crack initiation in bearing steel in the very high cycle fatigue (VHCF) regime. The size and type of inclusions in the steel were quantitatively analyzed, and VHCF tests were performed. Some fatigue cracks were found to be initiated in the gaps between inclusions (Al2O3, MgO-Al2O3) and the matrix, while other cracks originated from the interior of inclusions (TiN, MnS). To explain the related mechanism, the tessellated stresses between inclusions and the matrix were calculated and compared with the yield stress of the matrix. Results revealed that the inclusions could be classified into two types under VHCF; of these two, only one type could be regarded as holes. Findings in this research provide a better understanding of how inclusions affect the high cycle fatigue properties of bearing steel.
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