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Effect of microstructural banding in steel

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Abstract

Tensile and notch-impact properties in wrought steel containing 0.25 pct C and 1.5 pct Mn, with and without elongated inclusions and processed so as to be severely banded or virtually free of microstructural banding, are compared. A short-time, high-temperature normalizing treatment removed the banded condition. Both banding and elongated inclusions cause anisotropy in tensile ductility and impact energy. Elimination of banding is effective in reducing anisotropy in clean steel, but results in only modest improvement in steel containing numerous elongated inclusions. Eliminating microstructural banding alters austenite transformation to only a small extent but improves subsequent machining and cold forming by replacing martensite concentrated in bands with randomly dispersed small volumes of martensite in steel incompletely transformed to ferrite and pearlite or to bainite.

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Authors and Affiliations

  1. Edgar C. Bain Laboratory for Fundamental Research, U.S. Steel Corp., Research Center, Monroe-ville, Pa

    R. A. Grange (Staff Scientist)

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  1. R. A. Grange
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Additional information

This paper is based on an invited talk presented at a symposium on Homogenization of Alloys, sponsored by the IMD Heat Treatment Committee, and held on May 11, 1970, at the spring meeting of The Metallurgical Society of AIME, in Las Vegas, Nev.

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Grange, R.A. Effect of microstructural banding in steel. Metall Trans 2, 417–426 (1971). https://doi.org/10.1007/BF02663328

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  • DOI: https://doi.org/10.1007/BF02663328

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