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论文类型：期刊论文

发表时间：2018-02-01

发表刊物：INTERNATIONAL JOURNAL OF FATIGUE

收录刊物：SCIE、EI

卷号：107

页面范围：83-95

ISSN号：0142-1123

关键字：Shot-peening; Ti-6Al-4V; Dovetail joint; Fretting wear; Crack initiation

摘要：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.