Analysis of Residual Stress Relaxation Under Mechanical Cyclic Loading of Shot-Peened TRIP780 Steel
Communication avec acte
Author

211915 Mechanics surfaces and materials processing [MSMP]
193010 Mécanique des Surfaces (EA4496) [MECASURF]

107452 Laboratoire de Conception Fabrication Commande [LCFC]
128006 MECASURF [MECASURF]
211915 Mechanics surfaces and materials processing [MSMP]

178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

12062 VALDUC [DAM/VALDUC]
32956 Science et Ingénierie des Matériaux et Procédés [SIMaP]
162787 Institut Régional du Travail [Nancy] [IRT]
199963 Laboratoire de Mécanique, Modélisation et Procédés Propres [M2P2]
549864 Institut de recherche technologique Matériaux Métallurgie et Procédés [IRT M2P]
Date
2016Abstract
Shot-peening is a common mechanical surface treatment used in automotive and aeronautical industries to enhance life duration of mechanical parts by introducing compressive residual stresses. TRIP 780 steel fatigue type specimens are shot-peened and loaded under cyclic bending. The martensite phase transformation and the evolution of residual stresses in the different phases are determined by XRD at different numbers of cycles. A FEM model is also proposed to better understand the evolution of residual stresses in the first cycles.
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