Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-02-15

Journal: WEAR

Included Journals: EI、SCIE

Volume: 372

Page Number: 81-90

ISSN: 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.