Low Cycle Fatigue Behavior of TC21 Titanium Alloy with Bi-Lamellar Basketweave Microstructure
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Low Cycle Fatigue
3. Results and Discussion
3.1. Cyclic Stress–Strain Behavior
3.2. Hystersis Loop Analysis
3.3. Strain–Life Relationship
3.4. TEM Observation of Fatigue Microstructure
3.5. Cyclic Back Stress-Friction Stress Analysis
3.6. Fatigue Fracture and Crack Analysis
4. Conclusions
- TC21 titanium alloy displayed cyclic softening and non-Masing behavior that were interpreted on the basis of the cyclic back stress, friction stress and fatigue deformation microstructure.
- Low cycle fatigue cracks were predominantly initiated from the slip bands on the surface of the samples at a high total strain, and the crack initiation occurred at the αL/β interface at a relatively low total strain.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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b | c | ||
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1634.7 | −0.0821 | 12.428 | −1.108 |
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Nie, B.; Song, Y.; Huang, X.; Qi, H.; Zhao, Z.; Chen, D. Low Cycle Fatigue Behavior of TC21 Titanium Alloy with Bi-Lamellar Basketweave Microstructure. Crystals 2022, 12, 796. https://doi.org/10.3390/cryst12060796
Nie B, Song Y, Huang X, Qi H, Zhao Z, Chen D. Low Cycle Fatigue Behavior of TC21 Titanium Alloy with Bi-Lamellar Basketweave Microstructure. Crystals. 2022; 12(6):796. https://doi.org/10.3390/cryst12060796
Chicago/Turabian StyleNie, Baohua, Yu Song, Xianyi Huang, Haiying Qi, Zihua Zhao, and Dongchu Chen. 2022. "Low Cycle Fatigue Behavior of TC21 Titanium Alloy with Bi-Lamellar Basketweave Microstructure" Crystals 12, no. 6: 796. https://doi.org/10.3390/cryst12060796