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| Hot Deformation Behaviors of Fe-20Mn-4Al-2Si High-manganese Steel |
| Received:January 09, 2018 Revised:April 15, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.04.001 |
| KeyWord:hot deformation microstructure dynamic recrystallization high-manganese steel |
| Author | Institution |
| CUI Hai-tao |
Shenyang Ligong University, Shenyang , China |
| DONG Xu-guang |
Shenyang Ligong University, Shenyang , China |
| SHAO Zhong-cai |
Shenyang Ligong University, Shenyang , China |
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| Abstract: |
| Objective To research hot deformation behaviors of Fe-20Mn-4Si-2Al high-manganese steel at 850 to 1050 ℃ and different strain rates. Methods Steel ingot for experiment was hot-rolled into 10 mm thick plate. Then it was sampled to carry out uniaxial hot compression test with MMS-300 multifunctional hot mode tester. Hot deformation behaviors of Fe-Mn-Si-Al high-manganese steel were investigated systematically based on the obtained stress-strain curve and evolvement rules of microstructure. Results Strain rate was the key factor that affected hot deformation behavior of Fe-Mn-Si-Al high-manganese steel. The dynamic recrystallization was likely to take place at low strain rate in hot deformation. The apparent stress exponent and the apparent activation energy of the specimens were 3.10 and 412.151 kJ/mol, respectively. The hot working equation of the tested steel was established. Conclusion The dynamic recrystallization was prone to occur when Z≤8.351×1017, and better hot deformation properties of Fe-20Mn-4Si-2Al high-manganese steel could be obtained under this condition. |
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