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Indexed by:期刊论文

Date of Publication:2018-02-01

Journal:INTERNATIONAL JOURNAL OF FATIGUE

Included Journals:SCIE、EI

Volume:107

Page Number:83-95

ISSN No.: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.