Titre :

Improving the fretting and corrosion fatigue performance of 300M ultra-high strength steel using the ultrasonic surface rolling process

Auteur(s) :

Zhao, Weidong [Auteur]
University of Akron
Northernwest Polytechnical University [Xi'an] [NPU]
Liu, Daoxin [Auteur]
Northernwest Polytechnical University [Xi'an] [NPU]
Zhang, Xiaohua [Auteur]
Northernwest Polytechnical University [Xi'an] [NPU]
Zhou, Ying [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Zhang, Ruixia [Auteur]
University of Akron
Zhang, Hao [Auteur]
University of Akron
Yé, Chang [Auteur]
University of Akron

Titre de la revue :

International Journal of Fatigue

Pagination :

30-38

Éditeur :

Elsevier

Date de publication :

2019-04

ISSN :

0142-1123

Mot(s)-clé(s) en anglais :

300M ultra-high strength steels
Ultrasonic surface rolling process (USRP)
Compressive residual stress
Corrosion Fatigue
Fretting fatigue

Discipline(s) HAL :

Chimie
Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

300M ultra-high strength steels (300M steels) are frequently used in the manufacture of aircraft landing gear due to their high strength and ductility. However, their high sensitivity to surface defects accelerates fatigue ...
Lire la suite >300M ultra-high strength steels (300M steels) are frequently used in the manufacture of aircraft landing gear due to their high strength and ductility. However, their high sensitivity to surface defects accelerates fatigue failure and hinders their wider application. In this work, ultrasonic surface rolling processing (USRP) was used to process 300M steel. The surface roughness, hardness, microstructure, and residual stresses before and after USRP treatment were compared. The surface roughness for USRP-treated samples (0.062 μm) was found to be lower than that for untreated samples (0.32 μm). In addition, a plastically deformed layer was generated on the surface of USRP-treated samples that resulted in higher hardness. Beneficial compressive residual stresses were introduced as a result of USRP treatment. The better surface finish, higher surface hardness and compressive residual stresses lead to significant improvement in the resistance of the 300M steels to fretting fatigue and corrosion fatigue. The fretting fatigue life increased from 11.9 K cycles to 56.3 K cycles, while the corrosion fatigue life increased from 29.9 K cycles to 702.1 K cycles.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL