The wear resistance of rails has been improved by increasing the strength through decreasing the pearlite lamellar spacing. In conventional heat-treated rails containing eutectoid carbon, it was a metallurgical challenge to accomplish still a higher strength with high stability. The authors studied the effect of the cementite density of pearlite lamellae on the wear resistance of rails by making use of hepereutectoid steel. As a result, it was confirmed that the increase in the carbon content to a hypereutectoid region improves the wear resistance as compared with that of the eutectoid steel, and at the same time decreases the dependence of the pearlite transformation temperature on the cooling rate and increases the hardness in the depth direction of the rail head. It was also confirmed that the ductility loss of hypereutectoid steel can be prevented by reducing the austenite grain size to refine the pearlite block. Hypereutectoid steel rails with higher than ever wear resistance and internal fatigue damage resistance were developed, based on these findings. The new rails have already been installed on heavy-haul railways in North America and are proving to have a long life.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Application of hypereutectoid steel to heavy haul track rail


    Contributors:
    Ueda, M. (author) / Uchino, K. (author)


    Publication date :

    1997


    Size :

    14 Seiten, 3 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Development of Hypereutectoid Steel Rails for Heavy Haul Railways

    Ueda, M. / Uchino, K. / Kageyama, H. et al. | British Library Conference Proceedings | 1997


    Designing track for heavy haul

    Online Contents | 1995


    Designing track for heavy haul

    Rhode, David | IuD Bahn | 1995


    Studies on heavy-haul rail technology

    Zhou, Qingyue | IuD Bahn | 2011


    Rail Defects of Heavy Haul Railways

    Wan, F. / Sun, G. / Huang, S. et al. | British Library Conference Proceedings