Elevated Temperature Tensile Behavior of a Nb-Mo Microalloyed Medium Mn Alloy under Quasistatic Loads
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Discussion
4.1. The Dependence of Stability of Retained Austenite on Deformation Temperature
4.2. The Dependence of Deformation Mechanism on Deformation Temperature
5. Conclusions
- (1)
- The higher deformation temperature increases the stability of retained austenite for the lower chemical driving force for transformation from retained austenite to martensite. The increase in deformation temperature leads to a decrease in the fraction of transformed austenite from 30% to 9%.
- (2)
- The ultimate tensile strength was significantly reduced with increasing deformation temperature, but both YS and EI values changed slightly. The best product of UTS and EI (~59.5 GPa·%) can be achieved at the deformation temperature of 50 °C, implying an excellent combination of strength and ductility.
- (3)
- The increase in deformation temperature from −50 to 150 °C leads to the increase in the SFE value from 12.4 to 17.5 . When the deformation was −50 °C, the deformation mechanism was mainly the TRIP effect, while the deformation mechanism was mainly governed by the TWIP effect at 150 °C.
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Wu, W.; Cai, M.; Zhang, Z.; Tian, W.; Pan, H. Elevated Temperature Tensile Behavior of a Nb-Mo Microalloyed Medium Mn Alloy under Quasistatic Loads. Metals 2022, 12, 442. https://doi.org/10.3390/met12030442
Wu W, Cai M, Zhang Z, Tian W, Pan H. Elevated Temperature Tensile Behavior of a Nb-Mo Microalloyed Medium Mn Alloy under Quasistatic Loads. Metals. 2022; 12(3):442. https://doi.org/10.3390/met12030442
Chicago/Turabian StyleWu, Wenlong, Minghui Cai, Zeyu Zhang, Weigong Tian, and Haijun Pan. 2022. "Elevated Temperature Tensile Behavior of a Nb-Mo Microalloyed Medium Mn Alloy under Quasistatic Loads" Metals 12, no. 3: 442. https://doi.org/10.3390/met12030442