Effects of Surface Softening on the Mechanical Properties of an AISI 316L Stainless Steel under Cyclic Loading
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Microstructure Characterization of IGNS and CRA Sample
3.2. Mechanical Properties of IGNS and CRA Sample
3.3. Fatigue Behavior of the IGNS and CRA Sample
3.4. Fractography
4. Discussion
4.1. Effect of Surface Softening on Fatigue Behavior at Stress Amplitude >400 MPa
4.2. Effect of Surface Softening on Fatigue Behavior at Stress Amplitude ≤400 MPa
4.3. Effects of Surface Softening on Fatigue Behavior
4.4. Effects of Residual Stress on Fatigue Behavior
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Load | 750(MPa) | 700 | 650 | 600 | 550 | 500 | 400 | 300 | 250 | 200 | 180 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sample | ||||||||||||
IGNS | 1 | 2 | 1 | 1 | 1 | 4 | 4 | 1 | ||||
CRA | 2 | 2 | 2 | 2 | ||||||||
CG | 1 | 1 | 3 | 2 |
Sample | σu (MPa) | σf′ (MPa) | b |
---|---|---|---|
CG | 644 | 539 | −0.08 |
IGNS | 1241 | 9651 | −0.25 |
CRA | 1310 | 3912 | −0.16 |
DPD | 1190 | 1812 | −0.10 |
ECAP | 1340 | 1367 | −0.11 |
Sample | Residual Stress (MPa) |
---|---|
CG | −56 ± 34 |
IGNS | −384 ± 18 |
CRA | −417 ± 43 |
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Fang, T.; Cai, F. Effects of Surface Softening on the Mechanical Properties of an AISI 316L Stainless Steel under Cyclic Loading. Metals 2021, 11, 1788. https://doi.org/10.3390/met11111788
Fang T, Cai F. Effects of Surface Softening on the Mechanical Properties of an AISI 316L Stainless Steel under Cyclic Loading. Metals. 2021; 11(11):1788. https://doi.org/10.3390/met11111788
Chicago/Turabian StyleFang, Tiehui, and Feng Cai. 2021. "Effects of Surface Softening on the Mechanical Properties of an AISI 316L Stainless Steel under Cyclic Loading" Metals 11, no. 11: 1788. https://doi.org/10.3390/met11111788