Titre :

Retained austenite-aided cyclic plasticity of the quenched 9Ni steel

Auteur(s) :

Cota Araujo, Mahira-Adna [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Vogt, Jean-Bernard [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Bouquerel, Jeremie [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207

Titre de la revue :

International Journal of Fatigue

Numéro :

152

Pagination :

106445

Éditeur :

Elsevier BV

Date de publication :

2021-11

ISSN :

0142-1123

Mot(s)-clé(s) en anglais :

Crack nucleation
Martensite
Cyclic softening
Microstructures - extrusion/intrusions

Discipline(s) HAL :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

Résumé en anglais : [en]

This study focuses on the low cycle fatigue mechanism of the quenched 9Ni martensitic steel containing retained austenite films at martensite laths. HRTEM and EBSD suggested that extrusions developed along Low Angle Boundaries ...
Lire la suite >This study focuses on the low cycle fatigue mechanism of the quenched 9Ni martensitic steel containing retained austenite films at martensite laths. HRTEM and EBSD suggested that extrusions developed along Low Angle Boundaries or along High Angle Boundaries at low and high strain respectively. Short cracks grew along LAB at low strain while they used any kind of boundary as well as crossed the martensite laths at high strain. Retained austenite allowed a flowing of matter along interfaces by acting as a lubricant. Consequently, the Coffin-Manson relation exhibited a bilinearity with a change in curve slope at Δεt = 1%.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Date de dépôt :

2021-08-24T07:11:03Z
2021-08-27T06:48:53Z