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Shot peening of TRIP780 steel: Experimental analysis and numerical simulation

Article dans une revue avec comité de lecture
Author
BOUSCAUD, Denis
GUIHEUX, Romain
549864 Institut de recherche technologique Matériaux Métallurgie et Procédés [IRT M2P]
PATOOR, Etienne
24541 Georgia Tech Lorraine [Metz]
PUYDT, Quentin
549864 Institut de recherche technologique Matériaux Métallurgie et Procédés [IRT M2P]
ccBERVEILLER, Sophie
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ccKUBLER, Regis
211915 Mechanics surfaces and materials processing [MSMP]

URI
http://hdl.handle.net/10985/14743
DOI
10.1016/j.jmatprotec.2019.02.031
Date
2019
Journal
Journal of Materials Processing Technology

Abstract

This study aims at the experimental and numerical analysis of TRIP780 steel after conventional shot peening. TRIP steels exhibit a multiphase microstructure with martensitic transformation of the retained austenite during shot peening. In-depth experimental analysis are carried out with microhardness and X-ray diffraction. Residual stresses profiles are determined in the pseudo-ferritic phases (α + α′) and in the retained austenite γ. A representative finite element model of shot peening with a material behavior law describing the multiphase microstructure and the martensitic phase transformation during loading is proposed. The results are compared to experimental data and the effect of martensitic transformation is numerically investigated.

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