Stress Relaxation Properties and Microscopic Deformation Structure in Bending of the C7025 and C7035 Alloy
Abstract
:1. Introduction
2. Experimental Section
3. Calculation
4. Results
4.1. Dynamic Equation of Stress Relaxation
4.2. Transmission Electron Microscopy Analysis of Relaxed Specimens
4.2.1. Before Stress Relaxation
4.2.2. After Stress Relaxation
5. Discussion
6. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Alloy | Nickel | Silicon | Cobalt | Copper |
---|---|---|---|---|
C7025 | 2.6 | 0.6 | 0 | Balance |
C7035 | 1.4 | 0.6 | 1.2 | Balance |
Alloy | Tensile Strength σb (MPa) | Yield Strength σs (MPa) | Elongation δ (%) |
---|---|---|---|
C7025 | 756 ± 20 | 535 ± 10 | 5~7 |
C7035 | 838 ± 20 | 584 ± 10 | 5~7 |
Alloy | Temperature | Dynamic Equation | Variance | Correlation Coefficient |
---|---|---|---|---|
C7035 | 298 K | σ* = 449.96 + 75.75 × (t + 1.61)−0.16 | 3.19 | 0.989 |
393 K | σ* = 108.98 + 401.91 × (t + 0.28)−0.02 | 8.71 | 0.978 | |
C7025 | 298 K | σ* = 367.44 + 142.56 × (t + 0.31)−0.06 | 5.31 | 0.988 |
393 K | σ* = 63.18 + 433.9 × (t + 0.03)−0.02 | 5.02 | 0.992 | |
C7035 | 298 K | σ* = [1.23 × 10−6 + 4.47 × 10−8 × (t + 0.95)]−0.46 | 2.89 | 0.991 |
393 K | σ* = [8.27 × 10−7 + 2.82 × 10−8 × (t + 0.36)]−0.45 | 8.28 | 0.979 | |
C7025 | 298 K | σ* = [1.31 × 10−6 + 4.42 × 10−8 × (t + 0.28)]−0.46 | 5.30 | 0.988 |
393 K | σ* = [8.54 × 10−7 + 2.68 × 10−8 × (t + 0.05)]−0.45 | 4.86 | 0.992 |
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Xiao, X.; Xu, H.; Huang, J.; Wang, J.; Zhang, J. Stress Relaxation Properties and Microscopic Deformation Structure in Bending of the C7025 and C7035 Alloy. Crystals 2018, 8, 324. https://doi.org/10.3390/cryst8080324
Xiao X, Xu H, Huang J, Wang J, Zhang J. Stress Relaxation Properties and Microscopic Deformation Structure in Bending of the C7025 and C7035 Alloy. Crystals. 2018; 8(8):324. https://doi.org/10.3390/cryst8080324
Chicago/Turabian StyleXiao, Xiangpeng, Hai Xu, Jian Huang, Junfeng Wang, and Jianbo Zhang. 2018. "Stress Relaxation Properties and Microscopic Deformation Structure in Bending of the C7025 and C7035 Alloy" Crystals 8, no. 8: 324. https://doi.org/10.3390/cryst8080324