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Influence of Vanadium on the Hardenability of a Carburizing Steel

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Journal of Heat Treating

Abstract

The case and core hardenability of a lean alloyed carburizing steel containing microalloying additions of vanadium, molybdenum, and titanium have been determined. For comparison purposes a standard SS2506 carburizing steel grade was selected and the results have shown similar core hardenability for the two steel types. However, at section sizes above -25 mm the standard grade was found to exhibit slightly better case hardenability. Using 10 mm Ø test bars, the fatigue limit of the two steel types has been found to be comparable.

An explanation for the difference between these two steels is given with reference to the continuous cooling transformation (CCT) diagrams and the microstructures in the case and core of different diameter bars. The possibility of obtaining a higher hardenability in the lean alloyed steel is discussed.

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Authors and Affiliations

  1. Swedish Institute for Metals Research, Drottning Kristinas Väg 48, S-114 28, Stockholm, Sweden

    Stephen Preston

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  1. Stephen Preston
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Preston, S. Influence of Vanadium on the Hardenability of a Carburizing Steel. J. Heat Treating 8, 93–99 (1990). https://doi.org/10.1007/BF02831629

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  • DOI: https://doi.org/10.1007/BF02831629

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