Strain Hardening Behavior and Microstructure Evolution of High-Manganese Steel Subjected to Interrupted Tensile Tests
Abstract
:1. Introduction
2. Materials and Methods
- Thermomechanically processed;
- Thermomechanically processed and annealed at 900 °C within 20 min.
3. Results and Discussion
3.1. Initial Material
3.2. Microstructure Changes during Interrupted Tensile Tests
3.3. Strain Hardening Behavior
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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C% | Mn% | Si% | Al% | S% | P% | Nb% | Ti% | N% | O% |
---|---|---|---|---|---|---|---|---|---|
0.040 | 27.50 | 4.18 | 1.96 | 0.017 | 0.004 | 0.033 | 0.010 | 0.0028 | 0.0007 |
Pass Number | Deformation Temperature (°C) | Sheet Thickness before a Pass (mm) | Sheet Thickness after a Pass (mm) | Absolute Reduction (mm) | Relative Strain (%) | Strain Rate (s−1) |
---|---|---|---|---|---|---|
1 | 1050 | 4.5 | 3.4 | 1.1 | 25 | 8.3 |
2 | 950 | 3.4 | 2.5 | 0.9 | 25 | 10 |
3 | 850 | 2.5 | 2.0 | 0.5 | 20 | 10 |
Steel Type | UTS (MPa) | YS (MPa) | YS/UTS | UE (%) | TE (%) | ||||
---|---|---|---|---|---|---|---|---|---|
Deformation level | - | 5% | 10% | 20% | Max. | Average value | - | - | - |
Hot-rolled | 808 | 550 | 530 | 600 | 550 | 557 | 0.68 | 26.7 | 44.8 |
Solution-heat-treated | 727 | 433 | 440 | 420 | 428 | 430 | 0.59 | 23.7 | 29.5 |
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Grajcar, A.; Kozłowska, A.; Grzegorczyk, B. Strain Hardening Behavior and Microstructure Evolution of High-Manganese Steel Subjected to Interrupted Tensile Tests. Metals 2018, 8, 122. https://doi.org/10.3390/met8020122
Grajcar A, Kozłowska A, Grzegorczyk B. Strain Hardening Behavior and Microstructure Evolution of High-Manganese Steel Subjected to Interrupted Tensile Tests. Metals. 2018; 8(2):122. https://doi.org/10.3390/met8020122
Chicago/Turabian StyleGrajcar, Adam, Aleksandra Kozłowska, and Barbara Grzegorczyk. 2018. "Strain Hardening Behavior and Microstructure Evolution of High-Manganese Steel Subjected to Interrupted Tensile Tests" Metals 8, no. 2: 122. https://doi.org/10.3390/met8020122