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Influence of crystalline elasticity on the stress distribution at the free surface of an austenitic stainless steel polycrystal. Comparison with experiments
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SYSNO ASEP 0305756 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Influence of crystalline elasticity on the stress distribution at the free surface of an austenitic stainless steel polycrystal. Comparison with experiments Title Vliv elasticity krystalu na napjatost v povrchových zrnech polykrystalické austenitické korozivzdorné oceli. Srovnání s experimentem Author(s) Sauzay, M. (FR)
Man, Jiří (UFM-A) RID, ORCIDSource Title Materials Science Forum - ISSN 0255-5476
Roč. 567-568, - (2008), s. 149-152Number of pages 4 s. Action MSMF /5./ Event date 27.06.2007-29.06.2007 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CH - Switzerland Keywords crystalline elasticity ; persistent slip markings (PSMs) ; austenite ; fatigue ; FE computations Subject RIV JL - Materials Fatigue, Friction Mechanics CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation This numerical study focuses on the recent AFM observations of Man et al. showing well-oriented grains in fatigued 316L austenitic stainless steel, however presenting no persistent slip markings (PSMs). Scanning electron microscopy (SEM) permits us to build finite element (FE) meshes of the observed grain aggregates and to assign to the modelled grains the crystallographic orientations measured by electron backscattering diffraction (EBSD). Then, 3D FE computations using the crystalline elasticity allow the evaluation of mean grain stress tensors and resolved shear stresses. The results could explain qualitatively the anomalous behaviour of the studied well-oriented grains which is partly due to the particular orientations and shapes of the neighbour grains. This study highlights the influence of crystalline elasticity and neighbour grains in microplasticity and crack nucleation. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
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