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The origin of transformation textures in steel weld metals containing acicular ferrite

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Abstract

The present investigation is concerned with basic studies of the development of transformation textures in steel weld metals, using the electron backscattering pattern (EBSP) technique. It is shown that the acicular ferrite (AF) plates exhibit an orientation relationship with both the austenite and the prior delta ferrite columnar grains in which they grow. The observed orientation relationship lies within the Bain orientation region and can be described by three texture components,i.e., a 〈100〉 component and two complementary 〈111〉 components. Each of these texture components is orientated approximately parallel with the original cell/dendrite growth direction. Measurements of the spatial misorientation between neighboring plates confirm that the morphology of AF in low-alloy steel weld metals bears a close resemblance to upper bainite.

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Authors and Affiliations

  1. SINTEF-Division of Metallurgy, N-7034, Trondheim, Norway

    A. O. Kluken Ph.D. (Research Metallurgist)

  2. The Norwegian Institute of Technology, N-7034, Trondheim, Norway

    Ø. Grong (Professor of Welding Metallurgy)

  3. Royal Norwegian Air Force Academy, N-7004, Trondheim, Norway

    J. Hjelen (Associate Professor of Physics)

Authors
  1. A. O. Kluken Ph.D.
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  2. Ø. Grong
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  3. J. Hjelen
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Kluken, A.O., Grong, Ø. & Hjelen, J. The origin of transformation textures in steel weld metals containing acicular ferrite. Metall Trans A 22, 657–663 (1991). https://doi.org/10.1007/BF02670288

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  • DOI: https://doi.org/10.1007/BF02670288

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