Effect of shot peening on high cycle and very high cycle fatigue properties of Ni-based superalloys

被引：36
|
作者：
Qin, Zhi [1 ]
Li, Bin [1 ]
Chen, Rui [1 ]
Zhang, Han [1 ]
Xue, Hongqian [1 ]
Yao, Changfeng [1 ]
Tan, Liang [1 ]
机构：
[1] Northwestern Polytech Univ, Key Lab High Performance Mfg Aero Engine, Minist Ind & Informat Technol, Xian 710072, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
GH4169; superalloy; Shot peening; High cycle fatigue; Very high cycle fatigue; Residual stress; CRACK INITIATION; MICROSTRUCTURE; BEHAVIOR; IN718; MECHANISM; CORROSION; STRENGTH; GH4169;
D O I：
10.1016/j.ijfatigue.2022.107429
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work, the GH4169 superalloy specimens were shot-peened at two different intensities (0.15 mmA and 0.3 mmA) to improve the fatigue properties, and the fatigue behavior of the shot-peen-treated specimens was investigated in the high cycle fatigue (HCF) and very high cycle fatigue (VHCF) regime. The results of the HCF and VHCF tests indicated that shot peening improved the fatigue properties of the material. In addition, it has shown that the tensile residual stresses introduced by excessive shot peening intensity reduce the benefits of shot peening in terms of improving fatigue properties.
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页数：13
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