Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations
The hot workability of microalloyed steel was studied in the deformation temperature range of 850–1200ºC and strain rate of 0.001-100s-1. The constitutive relation of flow stress with temperature, strain rate and strain was established to construct processing maps of the microalloyed steel. The proc...
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| Format: | Article |
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University of Belgrade, Technical Faculty, Bor
2022-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200014T.pdf |
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| author | Thakur S.K. Das A.K. Jha B.K. |
| author_facet | Thakur S.K. Das A.K. Jha B.K. |
| author_sort | Thakur S.K. |
| collection | DOAJ |
| description | The hot workability of microalloyed steel was studied in the deformation temperature range of 850–1200ºC and strain rate of 0.001-100s-1. The constitutive relation of flow stress with temperature, strain rate and strain was established to construct processing maps of the microalloyed steel. The processing maps were constructed using conventional power law, integral method, and Arrhenius equations. The developed processing maps were used to predict the optimal hot deformation conditions and were validated with metallurgical examinations. The safe regime for hot working of the experimental steel was found to be in the intermediate temperature-strain rate range (1000-1150ºC;0.001-10 s-1), where the deformation process was dominated by dynamic recrystallization and dynamic recovery of the austenitic phase. The processing map constructed using Arrhenius equations increased continuously with an increase in deformation temperature and decrease in strain rate and it did not reveal relevant information of hot workability with respect to deformation temperature and strain rate. The dynamic recrystallization behavior of experimental steel was affected by both deformation temperature and strain rate which was explained in detail through microstructural examination. |
| format | Article |
| id | doaj-art-060e9974d7994261ade8870cc77f470d |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-060e9974d7994261ade8870cc77f470d2025-02-02T13:28:53ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-0158232133310.2298/JMMB220114014T1450-53392200014THot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equationsThakur S.K.0Das A.K.1Jha B.K.2Steel Authority of India Ltd., R&D Centre for Iron & Steel, Ranchi, India + IIT(ISM), Mechanical Engineering, Dhanbad, IndiaIIT(ISM), Mechanical Engineering, Dhanbad, IndiaNational Institute of Foundry & Forge Technology (NIFFT), Department of Materials & Metallurgy, Ranchi, IndiaThe hot workability of microalloyed steel was studied in the deformation temperature range of 850–1200ºC and strain rate of 0.001-100s-1. The constitutive relation of flow stress with temperature, strain rate and strain was established to construct processing maps of the microalloyed steel. The processing maps were constructed using conventional power law, integral method, and Arrhenius equations. The developed processing maps were used to predict the optimal hot deformation conditions and were validated with metallurgical examinations. The safe regime for hot working of the experimental steel was found to be in the intermediate temperature-strain rate range (1000-1150ºC;0.001-10 s-1), where the deformation process was dominated by dynamic recrystallization and dynamic recovery of the austenitic phase. The processing map constructed using Arrhenius equations increased continuously with an increase in deformation temperature and decrease in strain rate and it did not reveal relevant information of hot workability with respect to deformation temperature and strain rate. The dynamic recrystallization behavior of experimental steel was affected by both deformation temperature and strain rate which was explained in detail through microstructural examination.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200014T.pdfdeformationprocessing mapmicroalloyedarrhenius equation |
| spellingShingle | Thakur S.K. Das A.K. Jha B.K. Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations Journal of Mining and Metallurgy. Section B: Metallurgy deformation processing map microalloyed arrhenius equation |
| title | Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations |
| title_full | Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations |
| title_fullStr | Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations |
| title_full_unstemmed | Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations |
| title_short | Hot deformation behavior of micro-alloyed steel using processing maps developed with different constitutive equations |
| title_sort | hot deformation behavior of micro alloyed steel using processing maps developed with different constitutive equations |
| topic | deformation processing map microalloyed arrhenius equation |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200014T.pdf |
| work_keys_str_mv | AT thakursk hotdeformationbehaviorofmicroalloyedsteelusingprocessingmapsdevelopedwithdifferentconstitutiveequations AT dasak hotdeformationbehaviorofmicroalloyedsteelusingprocessingmapsdevelopedwithdifferentconstitutiveequations AT jhabk hotdeformationbehaviorofmicroalloyedsteelusingprocessingmapsdevelopedwithdifferentconstitutiveequations |