Fatigue failure analysis of FV520B-I in different test media

被引：0
|
作者：
Wang J. [1 ]
Gao S. [2 ]
Yang Y. [1 ]
Bao Y. [1 ]
Peng W. [3 ]
机构：
[1] Marine Engineering College, Dalian Maritime University, Dalian
[2] Dalian Scientific Test and Control Technology Institute, Dalian
[3] Research Institute of Wuhan, Iron and Steel (Group) Company, Wuhan
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2022年 / 43卷 / 08期
关键词：
corrosion fatigue; fatigue life; fatigue test; fracture characteristic; FV520B-I; high strength steel; NaCl solution condition; ultra-high cycle fatigue;
D O I：
10.11990/jheu.202104065
中图分类号：
学科分类号：
摘要：
To study the fatigue failure behavior and mechanism of FV520B-I in a corrosive environment, this paper conducted a fatigue failure analysis of FV520B-I in different test media. The ultrasonic fatigue test system is used to conduct fatigue tests of FV520B-I in air, water, and 3. 5% NaCl solution. A scanning electron microscope is employed to observe the fracture surface for the analysis of the fracture morphology characteristics in different test environments and life ranges and for determining the defect forms that cause failure. The effects of corrosion media on the fatigue failure behavior of FV520B-I are studied according to the results of fracture energy spectrum analysis. The influence of different test environments on fatigue life is analyzed based on the test result. Results show that corrosion media play a leading role in the fatigue failure process under a small stress amplitude. The stress-life curve model of FV520B-I in different environments at an ultra-high frequency load is established by using the classical power function formula. The research content has positive significance for FV520B-I parts maintenance and failure research. © 2022 Editorial Board of Journal of Harbin Engineering. All rights reserved.
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页码：1163 / 1168
页数：5
相关论文
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