Experimental and numerical investigation on carbonitrided steel characterization with spherical indentationReport as inadecuate




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1 LGCGM - Laboratoire de Génie Civil et Génie Mécanique 2 UN - Université de Nantes 3 Faurecia Automotive Seating

Abstract : This study investigates the mechanical behavior of a carbonitrided steel, plastically graded material, during a spherical indentation test. We demonstrate that the behavior of a carbonitrided steel can be simulated accurately with a seven layer sample, including the surface, five intermediate layers and the substrate. Moreover, for engineering design simulations which require a lot of calculation time, using three layers provides a good compromise for accuracy. A complete experimental procedure involving seven successive identifications with inverse analysis gave the same results as a simpler procedure proposed in a previous paper. It is shown that the assumption of a linear variation of the properties in the intermediate layers between surface and substrate is valid. This is the first time that an instrumented roller indentation test has demonstrated the reliability of the proposed method for the mechanical characterization of carbonitrided steels with spherical indentation.

Keywords : Hardening law Mechanical properties Carbonitrided steel Spherical indentation Surface heat treatment





Author: Charbel Moussa - Olivier Bartier - Gerard Mauvoisin - Xavier Hernot - Jean-Marc Collin - Guillaume Delattre -

Source: https://hal.archives-ouvertes.fr/



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