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Improving plain and fretting fatigue resistance of A100 steel using ultrasonic nanocrystal surface modification
被引:37
作者:
Zhao, Weidong
[1
,2
]
Liu, Daoxin
[1
]
Yang, Jing
[1
]
Zhang, Hao
[2
]
Ma, Amin
[1
]
Zhang, Xiaohua
[1
]
Ren, Zhencheng
[2
]
Zhang, Ruixia
[2
]
Dong, Yalin
[2
]
Ye, Chang
[2
]
机构:
[1] Northwestern Polytech Univ, Corros & Protect Res Lab, 127 You Yi Xi Rd, Xian 710072, Peoples R China
[2] Univ Akron, Dept Mech Engn, Akron, OH 44325 USA
基金:
中国国家自然科学基金;
关键词:
Ultrasonic nanocrystal surface modification;
(UNSM);
A100;
steel;
Compressive residual stress;
Plain fatigue;
Fretting fatigue;
STAINLESS-STEEL;
AUSTENITIC STAINLESS;
CRACK PROPAGATION;
AERMET100;
STEEL;
RESIDUAL-STRESS;
TI-6AL-4V ALLOY;
GRAIN-SIZE;
BEHAVIOR;
WEAR;
TEMPERATURE;
D O I:
10.1016/j.ijfatigue.2021.106204
中图分类号:
TH [机械、仪表工业];
学科分类号:
0802 ;
摘要:
In this study, ultrasonic nanocrystal surface modification (UNSM) was used to improve plain and fretting fatigue properties of A100 steel. Results showed that an obvious plastic deformation layer was induced in A100 steel, and the martensite microstructure was remarkably refined. In addition, surface compressive residual stress after UNSM treatment was enhanced to 1700 MPa due to the severe lattice distortion. The increased surface hardness and the presence of beneficial compressive residual stresses after UNSM treatment significantly enhanced the plain/fretting fatigue resistance of A100 steel by retarding fatigue crack nucleation and propagation.
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页数:14
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