Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300
This work investigated changes in the microstructure and local mechanical properties after the application of selected heat treatments to EN-GJL-300 grey cast iron. The main goal was to optimize heat treatment to achieve increased mechanical properties and subsequently wear resistance. The heat and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/15/5/530 |
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| author | Peter Petruš Igor Barényi Jozef Majerík Michal Krbata Marcel Kohutiar Ingrid Kovaříková Martin Bilka |
| author_facet | Peter Petruš Igor Barényi Jozef Majerík Michal Krbata Marcel Kohutiar Ingrid Kovaříková Martin Bilka |
| author_sort | Peter Petruš |
| collection | DOAJ |
| description | This work investigated changes in the microstructure and local mechanical properties after the application of selected heat treatments to EN-GJL-300 grey cast iron. The main goal was to optimize heat treatment to achieve increased mechanical properties and subsequently wear resistance. The heat and heat–mechanical treatment were investigated by using a dilatometer as a physical simulator of treatment on real samples. Continuous cooling with three different rates and two other non-continuous treatments (austempering and ausforming) were used to treat the experimental samples. The research was focused on modification of the matrix microstructure, initially pearlitic. No change in the shape or morphology of the graphitic lamellae was required to preserve the damping properties. The results showed that, in terms of the specified conditions, heat treatment with continuous cooling at a rate of 10 °C s<sup>−1</sup> appeared to be optimal. This variant showed the presence of bainite and martensite in the microstructure with high hardness measured by nanoindentation as well as the optimal value of general Brinell hardness. |
| format | Article |
| id | doaj-art-439da2dd70cf44bca4e8a252d1741d26 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-439da2dd70cf44bca4e8a252d1741d262025-08-20T03:47:58ZengMDPI AGMetals2075-47012025-05-0115553010.3390/met15050530Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300Peter Petruš0Igor Barényi1Jozef Majerík2Michal Krbata3Marcel Kohutiar4Ingrid Kovaříková5Martin Bilka6Faculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaFaculty of Special Technology, Alexander Dubcek University of Trencin, Ku Kyselke 469, 911 06 Trencin, SlovakiaThis work investigated changes in the microstructure and local mechanical properties after the application of selected heat treatments to EN-GJL-300 grey cast iron. The main goal was to optimize heat treatment to achieve increased mechanical properties and subsequently wear resistance. The heat and heat–mechanical treatment were investigated by using a dilatometer as a physical simulator of treatment on real samples. Continuous cooling with three different rates and two other non-continuous treatments (austempering and ausforming) were used to treat the experimental samples. The research was focused on modification of the matrix microstructure, initially pearlitic. No change in the shape or morphology of the graphitic lamellae was required to preserve the damping properties. The results showed that, in terms of the specified conditions, heat treatment with continuous cooling at a rate of 10 °C s<sup>−1</sup> appeared to be optimal. This variant showed the presence of bainite and martensite in the microstructure with high hardness measured by nanoindentation as well as the optimal value of general Brinell hardness.https://www.mdpi.com/2075-4701/15/5/530grey cast ironquenchingdilatometrynanoindentationlocal mechanical propertiesaustempering |
| spellingShingle | Peter Petruš Igor Barényi Jozef Majerík Michal Krbata Marcel Kohutiar Ingrid Kovaříková Martin Bilka Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 Metals grey cast iron quenching dilatometry nanoindentation local mechanical properties austempering |
| title | Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 |
| title_full | Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 |
| title_fullStr | Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 |
| title_full_unstemmed | Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 |
| title_short | Impact of Heat Treatment on Microstructure Evolution in Grey Cast Iron EN-GJL-300 |
| title_sort | impact of heat treatment on microstructure evolution in grey cast iron en gjl 300 |
| topic | grey cast iron quenching dilatometry nanoindentation local mechanical properties austempering |
| url | https://www.mdpi.com/2075-4701/15/5/530 |
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