STP706

    On the Embrittlement and Toughness of High-Purity Fe-30Cr-2Mo Alloy

    Published: Jan 1980


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    Abstract

    Experiments were conducted to explain unexpected embrittlement phenomena encountered in fabricating a high-purity Fe-30Cr-2Mo alloy. By means of a hydrostatic tension test with a Bridgman-type specimen it was found that the fracture behavior of the alloy is highly dependent on stress state. Under conditions of low triaxial stress, the alloy displays excellent ductility. Under conditions of high triaxial stress, however, it shows less strain to fracture and a transition from ductile to cleavage fracture. The toughness of the Fe-30Cr-2Mo alloy can be significantly improved by thermomechanical processing.

    Keywords:

    ferritic stainless steels, workability, hydrostatic tension tests, ductile-brittle transition, thermomechanical processing, fracture toughness


    Author Information:

    Saito, S
    Graduate student, research engineer, associate professor, professor, and assistant professor, The Research Institute for Iron, Steel and Other Metals, Tohoku University,

    Tokuno, H
    Graduate student, research engineer, associate professor, professor, and assistant professor, The Research Institute for Iron, Steel and Other Metals, Tohoku University,

    Shimura, M
    Graduate student, research engineer, associate professor, professor, and assistant professor, The Research Institute for Iron, Steel and Other Metals, Tohoku University,

    Tanaka, E
    Graduate student, research engineer, associate professor, professor, and assistant professor, The Research Institute for Iron, Steel and Other Metals, Tohoku University,

    Kataura, Y
    Graduate student, research engineer, associate professor, professor, and assistant professor, The Research Institute for Iron, Steel and Other Metals, Tohoku University,

    Ototani, T
    President, Metal Research Corp.,


    Paper ID: STP38203S

    Committee/Subcommittee: A01.30

    DOI: 10.1520/STP38203S


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