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Determination of Gray Cast Iron Age Strengthening by Nondestructive Methods: Effect of Alloying Elements

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Abstract

Gray cast iron age strengthening is a phenomenon known as a modification of the alloy’s structure by iron-nitride precipitation during few days after casting. It generates an evolution of cast iron mechanical properties as a gain of hardness and Young’s modulus. In a first time, this article presents the possibility to monitor the aging time and the intensity of age strengthening using two nondestructive methods: nonstandard Rockwell hardness and inert frequencies measurement. In a second time, the study shows the influence of the alloying elements on this phenomenon and particularly the influence of free nitrogen amount, which is a first-order parameter to control aging. Finally, a prediction model of the time and the intensity of age strengthening has been elaborated using the results of the two different monitoring described.

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Fig. 1

The figure was reproduced from Ref 3 courtesy of IJMC

Fig. 2

The figure was reproduced from Ref 3 courtesy of IJMC

Fig. 3

The figure was reproduced from Ref 5 courtesy of IJMC

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The figure was reproduced from Ref 7 courtesy of Editions T.I.

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Acknowledgments

This study was financially supported by Renault Le Mans. This work was carried out as a part of a PhD thesis No 2012-ENAM-0016.

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Authors and Affiliations

  1. LaBoMaP, Arts et Métiers ParisTech, 71250, Cluny, France

    Vaucheret Alexis, Rossi Frédéric & Quesada Jean

  2. LabECAM, ECAM Lyon, INSA-Lyon, Université de Lyon, 69005, Lyon, France

    Vaucheret Alexis

  3. Renault ACI, 15 Avenue Pierre Piffault, 72000, Le Mans, France

    Albertalli Eric

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  1. Vaucheret Alexis
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  2. Rossi Frédéric
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  3. Quesada Jean
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  4. Albertalli Eric
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Correspondence to Vaucheret Alexis.

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Alexis, V., Frédéric, R., Jean, Q. et al. Determination of Gray Cast Iron Age Strengthening by Nondestructive Methods: Effect of Alloying Elements. J. of Materi Eng and Perform 28, 4026–4033 (2019). https://doi.org/10.1007/s11665-019-04180-2

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  • DOI: https://doi.org/10.1007/s11665-019-04180-2

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