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Creep ductility evaluation of low alloy steels used for steam turbine components

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Abstract

1Cr1Mo¼V low alloy forging and casing steels exhibited considerable secondary and tertiary stages in the creep tests conducted in the temperature range between 773 and 873 K. The primary stage, though present, was rather negligible at higher temperature ranges. Casting steel showed wedge type cavities which grew as cracks along the grain boundaries. In the case of forging steel, the voids were elliptical and flat which developed during the tertiary stage of creep deformation. Tertiary creep deformation and creep ductility of the two steels investigated have been analysed based on the type of voids developed during the tertiary stage.

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Authors and Affiliations

  1. Metallurgy Department, Corporate R&D, BHEL, Hyderabad, 500 093, India

    Kulvir Singh

  2. Metallurgical and Materials Engg Dept, IIT Madras, Chennai, 600 036, India

    M. Kamaraj

Authors
  1. Kulvir Singh
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  2. M. Kamaraj
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Correspondence to Kulvir Singh.

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Singh, K., Kamaraj, M. Creep ductility evaluation of low alloy steels used for steam turbine components. Trans Indian Inst Met 63, 391–395 (2010). https://doi.org/10.1007/s12666-010-0053-6

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  • DOI: https://doi.org/10.1007/s12666-010-0053-6

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