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Induction tempering of steel: Part I. Development of an effective tempering parameter

  • Published:
Journal of Heat Treating

Abstract

Time-temperature relationships for short-time tempering cycles were determined. The accuracy of conventional tempering parameters, such as the one proposed by Grange and Baughman, for short-time treatments at a fixed temperature (“isothermal” treatments) was established in salt-pot experiments for a variety of carbon and alloy steels fully hardened to martensite. In addition, the concept of an effective tempering parameter for tempering processes consisting of continuous heating and cooling (typical of induction-heating techniques) was developed. Determination of this effective tempering parameter is based on finding an effective time and temperature which allows the continuous cycle to be described in terms of an equivalent isothermal cycle. The applicability of this new technique was verified through laboratory induction tempering trials.

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Authors and Affiliations

  1. Battelle’s Columbus Laboratories, 43201, Columbus, OH

    S. L. Semiatin (Principal Research Scientist, Metalworking Section), D. E. Stutz (Research Scientist, Electronic Systems and Technology Section) & T. G. Byrer (Director, Center for Metals Fabrication)

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  1. S. L. Semiatin
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  2. D. E. Stutz
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  3. T. G. Byrer
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Semiatin, S.L., Stutz, D.E. & Byrer, T.G. Induction tempering of steel: Part I. Development of an effective tempering parameter. J. Heat Treating 4, 39–46 (1985). https://doi.org/10.1007/BF02835488

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  • DOI: https://doi.org/10.1007/BF02835488

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