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The mechanical stability of precipitated austenite in 9Ni steel

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Abstract

The strains inherent to the martensitic transformation of austenite particles in 9Ni steel create dislocation structures in the tempered martensite. These dislocation structures were studied by the complementary techniques of X-ray line profile analysis and transmission electron microscopy. The energy required to form these dislocation structures affects the thermodynamics of the transformation. We propose that changes in these dislocation structures reduce the “mechanical stability” of the austenite particles as they grow larger during isothermal tempering.

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Authors and Affiliations

  1. Keck Laboratory, California Institute of Technology, 91125, Pasadena, CA

    B. Fultz (Assistant Professor of Materials Science)

  2. Department of Materials Science and Mineral Engineering, University of California, Berkeley

    J. W. Morris (Professor, Faculty Senior Scientist)

  3. Lawrence Berkeley Laboratory, University of California, 94720, Berkeley, CA

    J. W. Morris (Professor, Faculty Senior Scientist)

Authors
  1. B. Fultz
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  2. J. W. Morris
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Fultz, B., Morris, J.W. The mechanical stability of precipitated austenite in 9Ni steel. Metall Trans A 16, 2251–2256 (1985). https://doi.org/10.1007/BF02670424

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  • DOI: https://doi.org/10.1007/BF02670424

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