STP407

    Stress-Relief Embrittlement of High-Strength Quenched and Tempered Alloy Steels

    Published: Jan 1968


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    Abstract

    An investigation was undertaken of the time-temperature-embrittlement relationships of two high-strength quenched and tempered steels. Optimum stress-relief treatments were developed which incorporate the maximum reduction in residual stress accompanied by the minimum increase in transition temperature. It was determined that stress-relief embrittlement in Steel A (5Ni-Cr-Mo-V, 140 ksi yield strength) is most severe in the 900 to 1000 F temperature range, and that Steel B (3Ni-Cr-Mo, 100 ksi yield strength) is not significantly embrittled by stress relief. The optimum stress-relief treatments for Steels A and B are obtained by heat treatment at as high a stressrelieving temperature as possible. The maximum stress-relieving temperature is limited to that which will not result in loss of yield strength.

    Keywords:

    stress-relieving, temper embrittlement, high-strength steels, alloy steels, toughness, residual stress, heat treatment, tempering, evaluation


    Author Information:

    Rosenstein, A. H.
    Senior project engineerPersonal member ASTM, Naval Ship Research and Development Center, Annapolis, Md.

    Asche, W. H.
    MetallurgistPersonal member ASTM, Naval Ship Research and Development Center, Annapolis, Md.


    Paper ID: STP46474S

    Committee/Subcommittee: A01.06

    DOI: 10.1520/STP46474S


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