Fatigue life prediction of Aermet100 steel in the atmosphere

XU Can; TIAN Donghua; WANG Hongli; WU Chengchuan; ZHENG Huaibei; LU Yonghao

doi:10.7513/j.issn.1004-7638.2025.02.026

Volume 46 Issue 2

May 2025

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XU Can, TIAN Donghua, WANG Hongli, WU Chengchuan, ZHENG Huaibei, LU Yonghao. Fatigue life prediction of Aermet100 steel in the atmosphere[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 190-197. doi: 10.7513/j.issn.1004-7638.2025.02.026

Citation:

XU Can, TIAN Donghua, WANG Hongli, WU Chengchuan, ZHENG Huaibei, LU Yonghao. Fatigue life prediction of Aermet100 steel in the atmosphere[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(2): 190-197. doi: 10.7513/j.issn.1004-7638.2025.02.026

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Fatigue life prediction of Aermet100 steel in the atmosphere

doi: 10.7513/j.issn.1004-7638.2025.02.026

1.
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
2.
Chengdu Advanced Metal Materials Industrial Technology Institute Co., Ltd., Chengdu 610300, Sichuan, China

Received Date: 2024-03-06
Publish Date: 2025-05-06

Abstract

Abstract

Fatigue is one of the common failure modes of high strength steels in service. Once it occurs, it will cause catastrophic accidents. In this study, the microstructures and high cycle fatigue life of A100 high strength steel in the atmosphere were studied. The results show that the microstructures of A100 high strength steel are mainly composed of martensite bundles, the reversed austenite films with a thickness of 8 nm and rod-like M₂C carbides with 2～4 nm in diameter and 9～14 nm in length. In the fatigue tests, the number of subgrain boundaries in the microstructures increases with a significant decrease of the number of lath boundaries as the stress decreases, and the martensite structure is elongated. In the meanwhile, the relationship between the fatigue life and stress level was obtained by fitting the S-N fatigue life curves: lgN = 7.54−1.29lg (S_max-953.06 ).
- high-strength steel,
- fatigue properties,
- high cycle fatigue,
- life expectancy

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References(20)

References

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