Volume 6, Issue 7 (July 2009)

    Overview of Pearlitic Rail Steel: Accelerated Cooling, Quenching, Microstructure, and Mechanical Properties

    (Received 15 July 2008; accepted 11 May 2009)

    Published Online: 2009

    CODEN: JAIOAD

      Format Pages Price  
    PDF Version 26 $25   ADD TO CART


    Abstract

    Railway networks form an integral part of the infrastructure development of a developing country with ever-increasing passenger and freight volume. Increase in train speed, pay load, reliability, and safety are the major thrust areas for railways requiring more stringent mechanical properties such as wear, deformation resistance, and fatigue life from the railway steel. Steel chemistry control and thermomechanical processing significantly affect final properties and performance of the railway steel. For example, for a given steel composition, a number of stable or metastable microstructures can be obtained by controlling heat treatment operations. Conventional rail steels primarily contain nearly eutectoid pearlitic microstructure, which is dependent on the criticality of the application. An overview of the physical metallurgy principles involved during the manufacturing of rail steel will be provided here. The primary focus of this review is thermal processing including quenching and accelerated cooling of the rail steel. In addition, other important aspects relating to design and production of rail steel are discussed, including: impact of steel chemistry on the phase diagram, effect of thermomechanical processing on microstructure, and influence of microstructure or residual stress on mechanical properties.


    Author Information:

    Sahay, Satyam S.
    Tata Research Development and Design Centre, Tata Consultancy Services Ltd., Pune,

    Mohapatra, Goutam
    Tata Research Development and Design Centre, Tata Consultancy Services Ltd., Pune,

    Totten, George E.
    Dept. of Mechanical and Materials Engineering, Portland State Univ., Portland, OR


    Stock #: JAI102021

    ISSN: 1546-962X

    DOI: 10.1520/JAI102021

    ASTM International is a member of CrossRef.

    Author
    Title Overview of Pearlitic Rail Steel: Accelerated Cooling, Quenching, Microstructure, and Mechanical Properties
    Symposium , 0000-00-00
    Committee A01