You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Effect of Thermal and Thermomechanical Treatments on the Temper Embrittlement of Low-Alloy Steels

    Published: 0

      Format Pages Price  
    PDF (1.7M) 35 $25   ADD TO CART
    Complete Source PDF (7.2M) 258 $77   ADD TO CART


    The effects of rapid heating and ausforming on the phenomenon of temper embrittlement were examined in two alloy martensitic steels (BS 970 En 30B and En 40C), and the results contrasted with those for conventionally treated material. Standard Charpy V-notch impact tests and tensile data were supplemented by plane strain fracture toughness (KIc) measurements. A deailed structural and fractographic examination was carried out in order to correlate the microstructural changes with the mechanical properties. The results are discussed in the light of current theories. The experimental results indicate that several mechanisms can be responsible for temper embrittlement. A tentative model is proposed to explain the temper embrittlement trough observed in low-alloy steels, which is based on a combination of two mechanisms involving coarse carbide precipitation and high dislocation density resulting from dislocation pinning.


    temper embrittlement, martensitic stainless steels, rapid heating, ausforming, tension impact tests, fracture toughness, sulfur carbide precipitation, dislocations, recovery, evaluation

    Author Information:

    Irani, J. J.
    Senior scientific officers, Sheffield,

    May, M. J.
    Senior scientific officers, Sheffield,

    Elliott, D.
    Senior scientific officers, Sheffield,

    Committee/Subcommittee: A01.06

    DOI: 10.1520/STP46480S