Effect of Microstructure on Fracture Toughness and Fatigue Crack Growth Behavior of Ti17 Alloy
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Tensile Properties
3.2. Fracture Toughness
3.3. Fatigue Crack Growth Behavior
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
Abbreviations
α | Hexagonal phase in titanium alloys |
β | Body-centered cubic phase in titanium alloys |
Tβ | Beta-transus temperature |
a | Crack length |
C, m | Parameters of the Paris-Erdogan equation |
da/dN | Fatigue crack growth rate |
ΔK | Cyclic stress intensity factor |
N | Number of cycles |
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Element | Al | Sn | Zr | Mo | Cr | Fe | C | N | H | O | Ti |
---|---|---|---|---|---|---|---|---|---|---|---|
wt. % | 5.01 | 1.98 | 2.02 | 4.15 | 4.33 | 0.30 | 0.05 | 0.05 | 0.0125 | 0.09 | Balance |
Specimens | US/MPa | YS/MPa | A/% | CTOD/µm |
---|---|---|---|---|
Bimodal structure | 1220 | 1165 | 13 | 12 |
Lamellar structure | 1205 | 1150 | 9.8 | 68 |
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Liang, R.; Ji, Y.; Wang, S.; Liu, S. Effect of Microstructure on Fracture Toughness and Fatigue Crack Growth Behavior of Ti17 Alloy. Metals 2016, 6, 186. https://doi.org/10.3390/met6080186
Liang R, Ji Y, Wang S, Liu S. Effect of Microstructure on Fracture Toughness and Fatigue Crack Growth Behavior of Ti17 Alloy. Metals. 2016; 6(8):186. https://doi.org/10.3390/met6080186
Chicago/Turabian StyleLiang, Rong, Yingping Ji, Shijie Wang, and Shuzhen Liu. 2016. "Effect of Microstructure on Fracture Toughness and Fatigue Crack Growth Behavior of Ti17 Alloy" Metals 6, no. 8: 186. https://doi.org/10.3390/met6080186