Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel
This paper presents the results of martensite tempering resistance in 4% Mn steel. The material was quenched and tempered at 350 °C for 15, 30, and 60 min. The analysis of the quenching and tempering was carried out using dilatometric and microstructural approaches. The phase composition was assesse...
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MDPI AG
2020-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/19/4442 |
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| author | Adam Grajcar Mateusz Morawiec Jose Antonio Jimenez Carlos Garcia-Mateo |
| author_facet | Adam Grajcar Mateusz Morawiec Jose Antonio Jimenez Carlos Garcia-Mateo |
| author_sort | Adam Grajcar |
| collection | DOAJ |
| description | This paper presents the results of martensite tempering resistance in 4% Mn steel. The material was quenched and tempered at 350 °C for 15, 30, and 60 min. The analysis of the quenching and tempering was carried out using dilatometric and microstructural approaches. The phase composition was assessed using X-ray diffraction. The M<sub>s</sub> temperature and tempering progress were simulated using JMatPro software. The dilatometric analysis revealed a small decrease in the relative change in length (RCL) during tempering. This decrease was connected to the precipitation kinetics of cementite within the martensite laths. The microstructure investigation using a scanning electron microscope showed a very small amount of carbides, even for the longest tempering time. This showed the high tempering resistance of the martensite in medium-Mn steels. The hardness results showed an insignificant decrease in the hardness depending on the tempering time, which confirmed the high tempering resistance of martensite. |
| first_indexed | 2024-03-10T15:49:08Z |
| format | Article |
| id | doaj.art-bfbee9d44aa24bdeb1a0a7f81ebf7a07 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T15:49:08Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bfbee9d44aa24bdeb1a0a7f81ebf7a072023-11-20T16:16:15ZengMDPI AGMaterials1996-19442020-10-011319444210.3390/ma13194442Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn SteelAdam Grajcar0Mateusz Morawiec1Jose Antonio Jimenez2Carlos Garcia-Mateo3Department of Engineering Materials and Biomaterials, Silesian University of Technology, 44-100 Gliwice, PolandDepartment of Engineering Materials and Biomaterials, Silesian University of Technology, 44-100 Gliwice, PolandDepartment of Physical Metallurgy, National Center for Metallurgical Research, 28040 Madrid, SpainDepartment of Physical Metallurgy, National Center for Metallurgical Research, 28040 Madrid, SpainThis paper presents the results of martensite tempering resistance in 4% Mn steel. The material was quenched and tempered at 350 °C for 15, 30, and 60 min. The analysis of the quenching and tempering was carried out using dilatometric and microstructural approaches. The phase composition was assessed using X-ray diffraction. The M<sub>s</sub> temperature and tempering progress were simulated using JMatPro software. The dilatometric analysis revealed a small decrease in the relative change in length (RCL) during tempering. This decrease was connected to the precipitation kinetics of cementite within the martensite laths. The microstructure investigation using a scanning electron microscope showed a very small amount of carbides, even for the longest tempering time. This showed the high tempering resistance of the martensite in medium-Mn steels. The hardness results showed an insignificant decrease in the hardness depending on the tempering time, which confirmed the high tempering resistance of martensite.https://www.mdpi.com/1996-1944/13/19/4442quenchingtemperingmedium-Mn steelmartensitic transformationdilatometrycementite precipitation |
| spellingShingle | Adam Grajcar Mateusz Morawiec Jose Antonio Jimenez Carlos Garcia-Mateo Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel Materials quenching tempering medium-Mn steel martensitic transformation dilatometry cementite precipitation |
| title | Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel |
| title_full | Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel |
| title_fullStr | Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel |
| title_full_unstemmed | Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel |
| title_short | Dilatometric and Microstructural Study of Martensite Tempering in 4% Mn Steel |
| title_sort | dilatometric and microstructural study of martensite tempering in 4 mn steel |
| topic | quenching tempering medium-Mn steel martensitic transformation dilatometry cementite precipitation |
| url | https://www.mdpi.com/1996-1944/13/19/4442 |
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