Morphology and Crystallography of Sub-Blocks in Ultra-Low Carbon Lath Martensite Steel

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  • Morito S.
    Department of Materials Science and Engineering, Shimane University
  • Adachi Y.
    Innovative Materials Engineering Laboratory, National Institute for Materials Science
  • Ohba T.
    Department of Materials Science and Engineering, Shimane University

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Abstract

The morphology and crystallography of sub-blocks in lath martensite were studied in an interstitial free steel. In each block the sub-blocks are classified into dominant and minor sub-blocks in terms of the volume fraction. The orientation relationship between the dominant and minor sub-blocks is [011]α′/10.5 degrees. Minor sub-blocks have a plate-like morphology and are connected to each other with the habit plane close to {111}γ, and their growth directions close to ⟨10\\bar1⟩γ.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 50 (8), 1919-1923, 2009

    The Japan Institute of Metals and Materials

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