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Indexed by:期刊论文

Date of Publication:2017-02-15

Journal:WEAR

Included Journals:SCIE、EI

Volume:372

Page Number:81-90

ISSN No.:0043-1648

Key Words:Ti-6A1-4V; Dovetail joint; Fretting wear; Fretting fatigue; Shot-peening

Abstract:In this study, Ti-6Al-4V dovetail joint specimens which highly simulate the attachment between the blade and disk of fan stages in a certain gas turbine engine were designed and used in fretting fatigue experiments. The fretting wear mechanism was characterized using a bench level experimental method. The effect of shot-peening on both fretting wear mechanism and fretting fatigue property was evaluated. The results indicated that shot-peening transformed the fretting wear behavior, altered the dominant crack initiation mechanism and dramatically promoted the fretting fatigue performance of Ti-6A1-4V dovetail joint specimens. Different reinforcement mechanisms of the multiple surface modifications created by shot-peening were also analyzed and summarized in this study. (C) 2016 Elsevier B.V. All rights reserved.