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Dislocation substructure as a function of strain in a dual-phase steel

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Abstract

Dislocation structures in the ferrite of a C-Mn-Si dual-phase steel intercritically annealed at 810°C were characterized at various tensile strains by transmission electron microscopy At strains which corresponded to the second stage on a Jaoul-Crussard plot of strain hardening behavior, the dislocation density in the ferrite is inhomogeneous, with a higher density near the martensite. The third stage on a Jaoul-Crussard plot corresponds to the presence of a well-developed dislocation cell structure in the ferrite. The average cell size during this stage is smaller than the minimum size reported for deformed iron, and the cell size was inhomogeneous, with a smaller cell size near the martensite.

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Authors and Affiliations

  1. Los Alamos Scientific Laboratory, 87544, Los Alamos, NM

    D. A. Korzekwa (Research Engineer)

  2. Department of Metallurgical Engineering, Colorado School of Mines, 80401, Golden, CO

    D. K. Matlock (Charles F. Fogarty Professor) & G. Krauss (AMAX Foundation Professor)

Authors
  1. D. A. Korzekwa
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  2. D. K. Matlock
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  3. G. Krauss
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Formerly Research Assistant at the Colorado School of Mines

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Korzekwa, D.A., Matlock, D.K. & Krauss, G. Dislocation substructure as a function of strain in a dual-phase steel. Metall Trans A 15, 1221–1228 (1984). https://doi.org/10.1007/BF02644716

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