Austenite Stability and Deformation Behavior in Medium Mn Steel Processed by Cyclic Quenching ART Heat Treatment
Abstract
:1. Introduction
2. Experimental Procedure
3. Results and Discussion
3.1. Microstructure Evolution and Mechanical Properties
3.2. Austenite Stability
3.3. Discontinuous TRIP Effect
4. Conclusions
- (1)
- The content of Mn in retained austenite is the main factor affecting its stability. In addition, retained austenite with different grain sizes and Mn contents has different grades of retained austenite stability.
- (2)
- The large fluctuation in the work hardening rate curve in the S3 stage is attributed to the discontinuous TRIP effect. The key to the discontinuous TRIP effect is that a certain amount of retained austenite is required in the experimental steel, and the retained austenite should have the stability of different grades and batches.
- (3)
- The point is affected by the chemical composition, grain size, yield strength, and stress state of the retained austenite. Increasing amounts of stable, retained austenite can be obtained by controlling the temperature of the experimental steel Ms below the service temperature, a more extensive TRIP effect can be produced, and the comprehensive properties of the experimental steel can be improved.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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C | Mn | Al | Si | Mo | Nb |
---|---|---|---|---|---|
0.25 | 3.98 | 1.22 | 0.20 | 0.19 | 0.03 |
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Liu, C.; Xiong, F.; Liu, G.; Wang, Y.; Cao, Y.; Xue, Z.; Peng, Q. Austenite Stability and Deformation Behavior in Medium Mn Steel Processed by Cyclic Quenching ART Heat Treatment. Materials 2021, 14, 7132. https://doi.org/10.3390/ma14237132
Liu C, Xiong F, Liu G, Wang Y, Cao Y, Xue Z, Peng Q. Austenite Stability and Deformation Behavior in Medium Mn Steel Processed by Cyclic Quenching ART Heat Treatment. Materials. 2021; 14(23):7132. https://doi.org/10.3390/ma14237132
Chicago/Turabian StyleLiu, Chunquan, Fen Xiong, Guanni Liu, Yong Wang, Yuxin Cao, Zhengliang Xue, and Qichun Peng. 2021. "Austenite Stability and Deformation Behavior in Medium Mn Steel Processed by Cyclic Quenching ART Heat Treatment" Materials 14, no. 23: 7132. https://doi.org/10.3390/ma14237132