STP672: Influence of Hydrogen on Age-Hardening Processes in 15-5 Precipitation Hardened Stainless Steel

    Murali, J
    Graduate research assistant; professor, Materials Engineering; and professor, Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Va.

    Louthan, MR
    Graduate research assistant; professor, Materials Engineering; and professor, Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Va.

    McNitt, RP
    Graduate research assistant; professor, Materials Engineering; and professor, Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Va.

    Pages: 11    Published: Jan 1979


    Abstract

    The aging characteristics of 15-5 precipitation hardened stainless steel were altered when age-hardening took place in a hydrogen environment. The presence of hydrogen increased the peak hardness and decreased the time to achieve peak hardness. Furthermore, the hardness of the hydrogen-aged samples increased to a maximum value with time of storage at room temperature. These observations are discussed in terms of proposed mechanisms for hydrogen embrittlement.

    Keywords:

    steels, microstructure, hydrogen, age-hardening, stainless steels, X-ray


    Paper ID: STP36880S

    Committee/Subcommittee: E04.05

    DOI: 10.1520/STP36880S


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