Effect of the ultrasonic surface rolling process on the fretting fatigue behavior of Ti-6Al-4V alloy

Chengsong Liu; Daoxin Liu; Xiaohua Zhang; Shouming Yu; Weidong Zhao

doi:10.3390/ma10070833

Effect of the ultrasonic surface rolling process on the fretting fatigue behavior of Ti-6Al-4V alloy

Chengsong Liu, Daoxin Liu, Xiaohua Zhang, Shouming Yu, Weidong Zhao

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

The effect of the ultrasonic surface rolling process (USRP) on the rotary bending fretting fatigue (FF) of Ti-6Al-4V alloy was investigated. The reason for the USRP's ability to improve the FF resistance of Ti-6Al-4V alloy was studied. The results revealed that the USRP induced a compressive residual stress field with a depth of 530 µm and a maximum residual stress of −930 MPa. Moreover, the surface micro-hardness of the USRP sample was significantly higher than that of the untreated base material (BM) sample, and the USRP yielded a 72.7% increase in the FF limit of the alloy. These further enhanced fatigue properties contributed mainly to the compressive residual stress field with large numerical value and deep distribution, which could effectively suppress FF crack initiation and early propagation. The USRP-induced surface work-hardening had only a minor impact on the FF resistance.

Original language	English
Article number	833
Pages (from-to)	833
Number of pages	1
Journal	Materials
Volume	10
Issue number	7
DOIs	https://doi.org/10.3390/ma10070833
State	Published - 20 Jul 2017

Keywords

Compressive residual stress
Fretting fatigue (FF)
Surface work-hardening
Ti-6Al-4V alloy
Ultrasonic surface rolling process (USRP)

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10.3390/ma10070833

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title = "Effect of the ultrasonic surface rolling process on the fretting fatigue behavior of Ti-6Al-4V alloy",

abstract = "The effect of the ultrasonic surface rolling process (USRP) on the rotary bending fretting fatigue (FF) of Ti-6Al-4V alloy was investigated. The reason for the USRP's ability to improve the FF resistance of Ti-6Al-4V alloy was studied. The results revealed that the USRP induced a compressive residual stress field with a depth of 530 µm and a maximum residual stress of −930 MPa. Moreover, the surface micro-hardness of the USRP sample was significantly higher than that of the untreated base material (BM) sample, and the USRP yielded a 72.7% increase in the FF limit of the alloy. These further enhanced fatigue properties contributed mainly to the compressive residual stress field with large numerical value and deep distribution, which could effectively suppress FF crack initiation and early propagation. The USRP-induced surface work-hardening had only a minor impact on the FF resistance.",

keywords = "Compressive residual stress, Fretting fatigue (FF), Surface work-hardening, Ti-6Al-4V alloy, Ultrasonic surface rolling process (USRP)",

author = "Chengsong Liu and Daoxin Liu and Xiaohua Zhang and Shouming Yu and Weidong Zhao",

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AU - Liu, Chengsong

AU - Liu, Daoxin

AU - Zhang, Xiaohua

AU - Yu, Shouming

AU - Zhao, Weidong

PY - 2017/7/20

Y1 - 2017/7/20

N2 - The effect of the ultrasonic surface rolling process (USRP) on the rotary bending fretting fatigue (FF) of Ti-6Al-4V alloy was investigated. The reason for the USRP's ability to improve the FF resistance of Ti-6Al-4V alloy was studied. The results revealed that the USRP induced a compressive residual stress field with a depth of 530 µm and a maximum residual stress of −930 MPa. Moreover, the surface micro-hardness of the USRP sample was significantly higher than that of the untreated base material (BM) sample, and the USRP yielded a 72.7% increase in the FF limit of the alloy. These further enhanced fatigue properties contributed mainly to the compressive residual stress field with large numerical value and deep distribution, which could effectively suppress FF crack initiation and early propagation. The USRP-induced surface work-hardening had only a minor impact on the FF resistance.

AB - The effect of the ultrasonic surface rolling process (USRP) on the rotary bending fretting fatigue (FF) of Ti-6Al-4V alloy was investigated. The reason for the USRP's ability to improve the FF resistance of Ti-6Al-4V alloy was studied. The results revealed that the USRP induced a compressive residual stress field with a depth of 530 µm and a maximum residual stress of −930 MPa. Moreover, the surface micro-hardness of the USRP sample was significantly higher than that of the untreated base material (BM) sample, and the USRP yielded a 72.7% increase in the FF limit of the alloy. These further enhanced fatigue properties contributed mainly to the compressive residual stress field with large numerical value and deep distribution, which could effectively suppress FF crack initiation and early propagation. The USRP-induced surface work-hardening had only a minor impact on the FF resistance.

KW - Compressive residual stress

KW - Fretting fatigue (FF)

KW - Surface work-hardening

KW - Ti-6Al-4V alloy

KW - Ultrasonic surface rolling process (USRP)

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Effect of the ultrasonic surface rolling process on the fretting fatigue behavior of Ti-6Al-4V alloy

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