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Phase Transformation Studies of Laser-Processed Fe-0.2%C-Cr Surface Alloys

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Abstract

Phase transformations in laser-processed Fe-0.2%C-Cr surface alloys with 5%, 10%, 20%, and 30%Cr were studied by light and electron microscopy. Alloys containing 5% and 10%Cr were found to be fully martensitic with a dislocated lath type substructure. Thin films of retained austenite and a homogeneous dispersion of fine carbides were observed at the lath boundaries and prior austenite grain boundaries. The alloy with a 20%Cr content showed a unique microstructure of twinned austenite needles in a dislocated ferrite matrix while the alloy containing 30%Cr exhibited a dislocated ferrite structure with M23C6 carbides.

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References

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Authors and Affiliations

  1. Materials Science Department, Oregon Graduate Center, Beaverton, OR, 97006

    P. A. Molian (Graduate Students) & P. J. Wang (Graduate Students)

  2. Dept. of Mech. Engg., University of Portland, Portland, OR, 97203

    K. H. Khan (Assistant Professor)

  3. Materials Science Department, Oregon Graduate Center, Beaverton, OR, 97006

    W. E. Wood (Professor and Chairman)

Authors
  1. P. A. Molian
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  2. P. J. Wang
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  3. K. H. Khan
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  4. W. E. Wood
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Molian, P.A., Wang, P.J., Khan, K.H. et al. Phase Transformation Studies of Laser-Processed Fe-0.2%C-Cr Surface Alloys. MRS Online Proceedings Library 8, 511–515 (1981). https://doi.org/10.1557/PROC-8-511

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  • DOI: https://doi.org/10.1557/PROC-8-511

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