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Pearlite in ultrahigh carbon steels: Heat treatments and mechanical properties

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Abstract

Two ultrahigh carbon steel (UHCS) alloys containing 1.5 and 1.8 wt pct carbon, respectively, were studied. These materials were processed into fully spheroidized microstructures and were then given heat treatments to form pearlite. The mechanical properties of the heat-treated materials were evaluated by tension tests at room temperature. Use of the hypereutectoid austenite-cementite to pearlite transformation enabled achievement of pearlitic microstructures with various interlamellar spacings. The yield strengths of the pearlitic steels are found to correlate with a predictive relation based on interlamellar spacing and pearlite colony size. Decreasing the pearlite interlamellar spacing increases the yield strength and the ultimate strength and decreases the tensile ductility. It is shown that solid solution alloying strongly influences the strength of pearlitic steels.

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Authors and Affiliations

  1. Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, v78712-1085, TX, Austin

    Eric M. Taleff (Assistant Professor)

  2. Manufacturing and Materials Engineering Division, Lawrence Livermore National Laboratory, 94550, Livermore, CA

    Chol K. Syn (Engineer/Materials Scientist) & Donald R. Lesuer (Group Leader/Materials Engineer)

  3. Department of Materials Science and Engineering, Stanford University, 94305, Stanford, CA

    Oleg D. Sherby (Professor)

Authors
  1. Eric M. Taleff
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  2. Chol K. Syn
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  3. Donald R. Lesuer
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  4. Oleg D. Sherby
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Taleff, E.M., Syn, C.K., Lesuer, D.R. et al. Pearlite in ultrahigh carbon steels: Heat treatments and mechanical properties. Metall Mater Trans A 27, 111–118 (1996). https://doi.org/10.1007/BF02647751

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  • DOI: https://doi.org/10.1007/BF02647751

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