Grain Growth Mechanism of Lamellar-Structure High-Purity Nickel via Cold Rolling and Cryorolling during Annealing
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Microstructure Evaluation
3.2. Mechanical Properties
4. Discussion
4.1. Recovery Characteristics of LG Nickel Annealed at Low Temperature (75–160 °C)
4.2. Recovery Characteristics of LG Nickel Annealing at 245 °C
5. Conclusions
- (1)
- Lamellar grain structures with a plane spacing of 68 nm and 66 nm were prepared by means of room-temperature rolling and cryorolling.
- (2)
- When annealed at 75 °C and 160 °C, the recovery rate of the samples after room-temperature rolling was faster than that after cryorolling.
- (3)
- After annealing at 245 °C, recrystallization occurred in both room-temperature rolled and cryorolled samples. Discontinuous static recrystallization occurred in the room-temperature rolled samples, whereas continuous static recrystallization occurred in the cryorolled samples; this was attributed to the greater deformation energy storage accumulated in the rolling process.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Processes | Annealed Temperature | Tensile Strength (MPa) | Elongation Rate (%) |
---|---|---|---|
Room-temperature rolled | As rolled | 811 ± 3 | 14 ± 1 |
Annealed at 75 °C | 821 ± 6 | 14 ± 1 | |
Annealed at 160 °C | 768 ± 11 | 14 ± 1 | |
Annealed at 245 °C | 279 ± 10 | 48 ± 6 | |
Cryorolled | As rolled | 820 ± 2 | 14 ± 1 |
Annealed at 75 °C | 830 ± 10 | 14 ± 1 | |
Annealed at 160 °C | 779 ± 8 | 14 ± 1 | |
Annealed at 245 °C | 278 ± 9 | 54 ± 4 |
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Li, Z.; Wu, Y.; Xie, Z.; Kong, C.; Yu, H. Grain Growth Mechanism of Lamellar-Structure High-Purity Nickel via Cold Rolling and Cryorolling during Annealing. Materials 2021, 14, 4025. https://doi.org/10.3390/ma14144025
Li Z, Wu Y, Xie Z, Kong C, Yu H. Grain Growth Mechanism of Lamellar-Structure High-Purity Nickel via Cold Rolling and Cryorolling during Annealing. Materials. 2021; 14(14):4025. https://doi.org/10.3390/ma14144025
Chicago/Turabian StyleLi, Zhide, Yuze Wu, Zhibao Xie, Charlie Kong, and Hailiang Yu. 2021. "Grain Growth Mechanism of Lamellar-Structure High-Purity Nickel via Cold Rolling and Cryorolling during Annealing" Materials 14, no. 14: 4025. https://doi.org/10.3390/ma14144025