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Martensite-austenite transformation in maraging steel alloys during tensile deformation and thermal cycling

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Abstract

The effect of simultaneous additions of tungsten on the martensite (M) ⇌ austenite (γ) transformation, taking place during tensile deformation under different constant stresses and thermal cyclic rates for Fe-Ni-Co based maraging steel alloys was studied. The strain rate sensitivity parameterm was found to be 1.0 and 0.6 for the M →γ andγ → M transformations, respectively. The interpretation of deformation results implied a preponderantly diffusional mechanism in the M →γ transformation and a dislocation mechanism in theγ → M transformation. The increase of the lattice parameters of maraging steel alloys indicated that the hardening element, which is tungsten, was dissolved after tensile deformation.

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Authors and Affiliations

  1. University College of Girls, Cairo, Egypt

    M. A. Kenawy & E. M. Sakr

  2. Faculty of Education, Ain Shams University, Cairo, Egypt

    M. R. Nagy

Authors
  1. M. A. Kenawy
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  2. M. R. Nagy
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  3. E. M. Sakr
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Kenawy, M.A., Nagy, M.R. & Sakr, E.M. Martensite-austenite transformation in maraging steel alloys during tensile deformation and thermal cycling. J Mater Sci 21, 3071–3077 (1986). https://doi.org/10.1007/BF00553338

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  • DOI: https://doi.org/10.1007/BF00553338

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