Low cycle fatigue of 316L stainless steel processed by surface mechanical attrition treatment (SMAT)

Zhidan Sun 1 Jianqiang Zhou 1 Delphine Retraint 1 Thierry Baudin 2 Anne-Laure Helbert 2 Francois Brisset 2 Pascale Kanoute 1, 3 G. Hénaff
1 LASMIS - Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée
ICD - Institut Charles Delaunay
2 ICMMO - Institut de Chimie Moléculaire et des Matériaux d'Orsay
3 DMAS, ONERA, Université Paris Saclay [Châtillon]
Abstract : In this work, the effect of surface mechanical attrition treatment (SMAT) on the cyclic behaviour of a 316L stainless steel under low cycle fatigue (LCF) is investigated. The LCF results are presented in the form of cyclic stress amplitude evolution for both untreated and SMATed samples. In order to better understand the microstructure change due to cyclic loading, electron backscatter diffraction (EBSD) is used to characterize the microstructure of the SMATed samples before and after fatigue tests. A microstructure gradient is highlighted for samples after SMAT from the top surface layer in nanocrystalline grains to the interior region non-affected by impacts. Under LCF loading, new slip systems are activated in the work hardened region, whereas no plastic slip is activated in the nanostructured layer. The residual stresses generated by SMAT are measured using X-ray diffraction (XRD), and their relaxations under cyclic loading are studied by taking into account the microstructure change. The cyclic behaviour of the samples in different material states is interpreted based on these investigations.
Document type :
Journal articles
Complete list of metadatas
https://hal-utt.archives-ouvertes.fr/hal-02279193
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Thursday, September 5, 2019 - 10:03:13 AM
Last modification on : Monday, September 16, 2019 - 4:35:54 PM

Links full text

openaccess

Identifiers

Collections

ONERA | INC-CNRS | P2MN | UNIV-PARIS-SACLAY | UTT

Citation

Zhidan Sun, Jianqiang Zhou, Delphine Retraint, Thierry Baudin, Anne-Laure Helbert, et al.. Low cycle fatigue of 316L stainless steel processed by surface mechanical attrition treatment (SMAT). MATEC Web of Conferences, EDP sciences, 2018, 165, pp.15002. ⟨10.1051/matecconf/201816515002⟩. ⟨hal-02279193⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

14

Contact

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