Abstract
A common way of representing the tempering responses of steels is with a “tempering parameter” that includes the effect of temperature and time on hardness after hardening. Such functions, usually in graphical form, are available for many steels and have been applied for isothermal tempering. In this article, we demonstrate that the method can be extended to non-isothermal conditions. Controlled heating experiments were done on three grades in order to verify the method.
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Acknowledgments
The 4340-steel was provided by E. Cameron who is an adjunct instructor at Pima Community College in Tucson, Arizona; she is also the Laboratory Manager, Department of Materials Science and Engineering, The University of Arizona. Ms. Cameron also guided A. Kohli in the use of laboratory equipment when the research was initiated.
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Poirier, D.R., Kohli, A. Method to Predict Tempering of Steels Under Non-isothermal Conditions. J. of Materi Eng and Perform 26, 1986–1992 (2017). https://doi.org/10.1007/s11665-017-2641-7
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DOI: https://doi.org/10.1007/s11665-017-2641-7