Modelling of Grain Refinement Induced by SMAT Process, Using a Complete Numerical Chaining Methodology

Souhail Benafia Delphine Retraint 1 Benoît Panicaud 1 Léa Le Joncour 1 Emmanuelle Rouhaud 1 Matthieu Micoulaut 2
1 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée
ICD - Institut Charles Delaunay
2 LPTMC - Laboratoire de Physique Théorique de la Matière Condensée
Abstract : Surface Mechanical Attrition Treatment (SMAT) is a recent process that enables to nanocrystallise the surface of metallic alloys. It can thus enhance mechanical properties of the treated material by inducing a grain refinement down to the nanometre scale, in the top surface layer. This nanocrystallisation process leads to different effects that were successively studied on several metallic materials. In the present work, investigations are carried out on the modelling of SMAT. A simulation of the shot dynamics is performed using different process parameters, with the aim to obtain the impact velocity field on the treated surface. This field is then used as an input for a finite element model to predict the induced grain refinement. The evolution of the micro and nanostructures are then calculated using a micromechanical approach, which takes into account the dislocations and their interactions. Coupled with a finite element analysis, this approach enables to deduce the influence of the process on the macroscopic material properties, whatever the geometry of the sample.
Keywords : Finite Element (FE) Simulation Grain Refinement Shot Velocity Surface Mechanical Attrition Treatment
Document type :
Journal articles
Complete list of metadatas
https://hal-utt.archives-ouvertes.fr/hal-02279421
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Thursday, September 5, 2019 - 11:46:54 AM
Last modification on : Monday, September 16, 2019 - 4:35:59 PM

Identifiers

Collections

LPTMC | UPMC | SORBONNE-UNIVERSITE | SU-SCIENCES | P2MN | UTT

Citation

Souhail Benafia, Delphine Retraint, Benoît Panicaud, Léa Le Joncour, Emmanuelle Rouhaud, et al.. Modelling of Grain Refinement Induced by SMAT Process, Using a Complete Numerical Chaining Methodology. Materials Science Forum, Trans Tech Publications Inc., 2013, 762, pp.295-300. ⟨10.4028/www.scientific.net/MSF.762.295⟩. ⟨hal-02279421⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

9

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD