Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test
We performed double hot torsion deformation tests on structural steel SAE 4340. The test temperature and strain rate were kept constant at 1050 °C and 0.2 s-1, respectively; while the applied strain (0.2 and 0.4) and the time between passes (1 s, 5 s and 40 s) were varied. The samples were heated to...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420315891 |
| _version_ | 1818989678678769664 |
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| author | A. Marques R.A. Souza G.A.M. Pinto A.G. S. Galdino M.L.P. Machado |
| author_facet | A. Marques R.A. Souza G.A.M. Pinto A.G. S. Galdino M.L.P. Machado |
| author_sort | A. Marques |
| collection | DOAJ |
| description | We performed double hot torsion deformation tests on structural steel SAE 4340. The test temperature and strain rate were kept constant at 1050 °C and 0.2 s-1, respectively; while the applied strain (0.2 and 0.4) and the time between passes (1 s, 5 s and 40 s) were varied. The samples were heated to a temperature of 1200 °C, and maintained at this temperature for 180 s (soaking) for complete homogenization. This was followed by cooling at a mean rate of 1 °C/s until the temperature of deformation was reached. Evaluation of the softening characteristics of the static and metadynamic material was made from plastic flow curves. There were similar softening characteristics for both values of tested strains, with the softened fraction increasing with time between passes, and with increasing strain. It was observed that there was refinement in the grains of the material subjected to a deformation of 0.4. |
| first_indexed | 2024-12-20T19:42:18Z |
| format | Article |
| id | doaj.art-5db81987d7204ae1a09ed1a0c7a61239 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-20T19:42:18Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-5db81987d7204ae1a09ed1a0c7a612392022-12-21T19:28:30ZengElsevierJournal of Materials Research and Technology2238-78542020-09-01951088610900Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion testA. Marques0R.A. Souza1G.A.M. Pinto2A.G. S. Galdino3M.L.P. Machado4Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Vitória, 1729, Jucutuquara, Vitória, ES, 29.040-780, BrazilInstituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Vitória, 1729, Jucutuquara, Vitória, ES, 29.040-780, BrazilInstituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Vitória, 1729, Jucutuquara, Vitória, ES, 29.040-780, BrazilCorresponding author.; Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Vitória, 1729, Jucutuquara, Vitória, ES, 29.040-780, BrazilInstituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Vitória, 1729, Jucutuquara, Vitória, ES, 29.040-780, BrazilWe performed double hot torsion deformation tests on structural steel SAE 4340. The test temperature and strain rate were kept constant at 1050 °C and 0.2 s-1, respectively; while the applied strain (0.2 and 0.4) and the time between passes (1 s, 5 s and 40 s) were varied. The samples were heated to a temperature of 1200 °C, and maintained at this temperature for 180 s (soaking) for complete homogenization. This was followed by cooling at a mean rate of 1 °C/s until the temperature of deformation was reached. Evaluation of the softening characteristics of the static and metadynamic material was made from plastic flow curves. There were similar softening characteristics for both values of tested strains, with the softened fraction increasing with time between passes, and with increasing strain. It was observed that there was refinement in the grains of the material subjected to a deformation of 0.4.http://www.sciencedirect.com/science/article/pii/S2238785420315891Hot torsionfraction of softeningAISI 4340 structural steel |
| spellingShingle | A. Marques R.A. Souza G.A.M. Pinto A.G. S. Galdino M.L.P. Machado Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test Journal of Materials Research and Technology Hot torsion fraction of softening AISI 4340 structural steel |
| title | Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test |
| title_full | Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test |
| title_fullStr | Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test |
| title_full_unstemmed | Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test |
| title_short | Evaluation of the softening mechanisms of AISI 4340 structural steel using hot torsion test |
| title_sort | evaluation of the softening mechanisms of aisi 4340 structural steel using hot torsion test |
| topic | Hot torsion fraction of softening AISI 4340 structural steel |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420315891 |
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