Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy

Ni Ao; Daoxin Liu; Xiaohua Zhang; Jiwang Zhang; Shengchuan Wu

doi:10.1016/j.ijfatigue.2022.106732

Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy

Ni Ao, Daoxin Liu, Xiaohua Zhang, Jiwang Zhang, Shengchuan Wu

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

31 Scopus citations

Abstract

This work investigates the effect of initial surface plastic deformation on the fatigue behavior of Ti-6Al-4V alloy based on the microstructure and residual stress evolution under fatigue loading. The high strain hardening ability, full play of compressive residual stress, and excellent surface integrity of samples with low plastic deformation severity resulted in relatively higher fatigue strength. Microstructural analysis revealed that the ultrasonic surface rolling process (USRP) applied to samples with low plastic deformation severity accommodated plastic strain by refining the grains, whereas the grains coarsened in the USRP samples with high plastic deformation severity for accommodating the plastic strain.

Original language	English
Article number	106732
Journal	International Journal of Fatigue
Volume	158
DOIs	https://doi.org/10.1016/j.ijfatigue.2022.106732
State	Published - May 2022

Keywords

Compressive residual stress
Fatigue mechanism
Gradient microstructure
Titanium alloy
Ultrasonic surface rolling process

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10.1016/j.ijfatigue.2022.106732

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title = "Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy",

abstract = "This work investigates the effect of initial surface plastic deformation on the fatigue behavior of Ti-6Al-4V alloy based on the microstructure and residual stress evolution under fatigue loading. The high strain hardening ability, full play of compressive residual stress, and excellent surface integrity of samples with low plastic deformation severity resulted in relatively higher fatigue strength. Microstructural analysis revealed that the ultrasonic surface rolling process (USRP) applied to samples with low plastic deformation severity accommodated plastic strain by refining the grains, whereas the grains coarsened in the USRP samples with high plastic deformation severity for accommodating the plastic strain.",

keywords = "Compressive residual stress, Fatigue mechanism, Gradient microstructure, Titanium alloy, Ultrasonic surface rolling process",

author = "Ni Ao and Daoxin Liu and Xiaohua Zhang and Jiwang Zhang and Shengchuan Wu",

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year = "2022",

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doi = "10.1016/j.ijfatigue.2022.106732",

language = "英语",

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journal = "International Journal of Fatigue",

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T1 - Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy

AU - Ao, Ni

AU - Liu, Daoxin

AU - Zhang, Xiaohua

AU - Zhang, Jiwang

AU - Wu, Shengchuan

PY - 2022/5

Y1 - 2022/5

N2 - This work investigates the effect of initial surface plastic deformation on the fatigue behavior of Ti-6Al-4V alloy based on the microstructure and residual stress evolution under fatigue loading. The high strain hardening ability, full play of compressive residual stress, and excellent surface integrity of samples with low plastic deformation severity resulted in relatively higher fatigue strength. Microstructural analysis revealed that the ultrasonic surface rolling process (USRP) applied to samples with low plastic deformation severity accommodated plastic strain by refining the grains, whereas the grains coarsened in the USRP samples with high plastic deformation severity for accommodating the plastic strain.

AB - This work investigates the effect of initial surface plastic deformation on the fatigue behavior of Ti-6Al-4V alloy based on the microstructure and residual stress evolution under fatigue loading. The high strain hardening ability, full play of compressive residual stress, and excellent surface integrity of samples with low plastic deformation severity resulted in relatively higher fatigue strength. Microstructural analysis revealed that the ultrasonic surface rolling process (USRP) applied to samples with low plastic deformation severity accommodated plastic strain by refining the grains, whereas the grains coarsened in the USRP samples with high plastic deformation severity for accommodating the plastic strain.

KW - Compressive residual stress

KW - Fatigue mechanism

KW - Gradient microstructure

KW - Titanium alloy

KW - Ultrasonic surface rolling process

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DO - 10.1016/j.ijfatigue.2022.106732

M3 - 文章

AN - SCOPUS:85123179061

SN - 0142-1123

VL - 158

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106732

ER -

Surface rolling deformed severity-dependent fatigue mechanism of Ti-6Al-4V alloy

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Keywords

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