The Evolutions of Microstructure, Texture and Hardness of A1050 Deformed by HPT at the Transition Area
Abstract
:1. Introduction
2. Experiment
3. Result and Discussion
4. Conclusions
- (1)
- The results show that the HPT technique can reduce the grain size of commercial pure Al to less than 1 μm, which is of the same order of magnitude as the grain sizes obtained by ECAP and ARB, and produce UFG materials.
- (2)
- The process of grain refinment is achieved by the repeated processes of grain elongation and subsequent grain fragmentation. Finally, the grain fragmentation and grain growth are balanced.
- (3)
- At the low strain stage, microhardness value surges to a high level owing to the increase in substructure density, whereas the grain size hardly changes. Then, the microhardness levels out at around 48 Hv and the grain size reaches a plateau as the plastic strain increases. Finally, the microhardness rises steadily with the decline in grain size.
- (4)
- When the equivalent strain increases from 0 to 0.42, it can be seen that the maximum orientation density of C component drops while that of Cube component increases. Such transition in texture components implies that the material flows around the SPN at these stages. However, such a flow pattern only has an effect at the early stage of HPT deformation. These initial components will evolve into typical ideal simple shear orientations with the development of HPT.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Rotation angle θ (deg.) | 15 | 30 | 90 | 180 | 360 | 720 | 1080 | 1800 |
Equivalent strain ε | 0.21 | 0.42 | 1.27 | 2.54 | 5.08 | 10.16 | 15.24 | 25.40 |
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Ni, H.; Ding, C.; Wang, H.; Lv, S.; Wang, X.; Liu, Y. The Evolutions of Microstructure, Texture and Hardness of A1050 Deformed by HPT at the Transition Area. Materials 2023, 16, 4686. https://doi.org/10.3390/ma16134686
Ni H, Ding C, Wang H, Lv S, Wang X, Liu Y. The Evolutions of Microstructure, Texture and Hardness of A1050 Deformed by HPT at the Transition Area. Materials. 2023; 16(13):4686. https://doi.org/10.3390/ma16134686
Chicago/Turabian StyleNi, Hongjun, Chenchen Ding, Haoyu Wang, Shuaishuai Lv, Xingxing Wang, and Yu Liu. 2023. "The Evolutions of Microstructure, Texture and Hardness of A1050 Deformed by HPT at the Transition Area" Materials 16, no. 13: 4686. https://doi.org/10.3390/ma16134686