Effect of shot-peening on the fretting wear and crack initiation behavior of Ti-6Al-4V dovetail joint specimens
Release Time:2019-03-11 Hits:
Indexed by: Journal Article
Date of Publication: 2018-02-01
Journal: INTERNATIONAL JOURNAL OF FATIGUE
Included Journals: EI、SCIE
Volume: 107
Page Number: 83-95
ISSN: 0142-1123
Key Words: Shot-peening; Ti-6Al-4V; Dovetail joint; Fretting wear; Crack initiation
Abstract: Fretting fatigue initiation behavior in Ti-6Al-4V dovetail assemblies are investigated by the combining applications of experimental and theoretical methods. The evolution of fretting regime, fretting wear mechanism and fretting crack initiation behavior in as-received and shot-peened samples are developed and comparatively evaluated. The effect of shot-peening on crack initiation orientation is elucidated through an analytical approach using fracture mechanic concepts. The results highlight that shot-peening not only changes the fretting wear mechanism and crack initiation angle, but also reduces the crack number and prevents the crack propagation in Ti-6Al-4V dovetail joint specimens.