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

Journal Article · Mon Jul 15 04:00:00 EDT 2019 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-019-04180-2· OSTI ID:22970649

Alexis, Vaucheret; Frédéric, Rossi; Jean, Quesada ^[1]; Eric, Albertalli ^[2]

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1. Arts et Métiers ParisTech, LaBoMaP (France)
2. Renault ACI (France)

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.

• OSTI ID: 22970649
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 7 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
CAST IRON
CASTINGS
EFFICIENCY
FREQUENCY MEASUREMENT
NITROGEN
PERFORMANCE
RADIATION DOSE UNITS
SI UNITS