A Physically Based Constitutive Model and Continuous Dynamic Recrystallization Behavior Analysis of 2219 Aluminum Alloy during Hot Deformation Process
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Flow Behaviors
3.2. Physically Based Constitutive Modeling
3.3. Verification of the Model
3.4. Microstructural Evolution
3.4.1. The Formation of CDRX
3.4.2. The Influence of TMP on CDRX
4. Conclusions
- The flow stress of the 2219 Al alloy is very sensitive to temperatures and strain rates, and its value decreases with the increase in temperatures and/or the decrease in strain rates.
- The physically based constitutive model of 2219 Al alloy established is proved to have good predictive performance, which can be used to accurately describe the flow behavior of the 2219 Al alloy in the temperature range of 623 K to 773 K, strain rate range of 0.01 s−1 to 10−1, and the strain range of 0~0.8.
- It has been proved that the main microstructure evolution of 2219 Al alloy under hot deformation is DRV and incomplete CDRX. Moreover, CDRX can occur readily at high temperatures, low strain rates and high strains; meanwhile, the recrystallized grains size will also be larger.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Si | Fe | Cu | Mn | Mg | Zn | V | Ti | Zr | Al |
---|---|---|---|---|---|---|---|---|---|
0.20 | 0.30 | 5.8~6.8 | 0.20~0.40 | 0.02 | 0.10 | 0.05~0.15 | 0.02~0.10 | 0.10~0.25 | Bal |
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Liu, L.; Wu, Y.; Gong, H.; Li, S.; Ahmad, A.S. A Physically Based Constitutive Model and Continuous Dynamic Recrystallization Behavior Analysis of 2219 Aluminum Alloy during Hot Deformation Process. Materials 2018, 11, 1443. https://doi.org/10.3390/ma11081443
Liu L, Wu Y, Gong H, Li S, Ahmad AS. A Physically Based Constitutive Model and Continuous Dynamic Recrystallization Behavior Analysis of 2219 Aluminum Alloy during Hot Deformation Process. Materials. 2018; 11(8):1443. https://doi.org/10.3390/ma11081443
Chicago/Turabian StyleLiu, Lei, Yunxin Wu, Hai Gong, Shuang Li, and A. S. Ahmad. 2018. "A Physically Based Constitutive Model and Continuous Dynamic Recrystallization Behavior Analysis of 2219 Aluminum Alloy during Hot Deformation Process" Materials 11, no. 8: 1443. https://doi.org/10.3390/ma11081443