Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg
This study investigates the influence of various heat treatment regimes on the structure and microhardness of the aluminum alloy AlSi10Mg processed by the L-DED method. The study considers heat treatment regimes for solid solution in the temperature range of 500−540 °C with holding times of 30–120 m...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2075-4701/15/1/92 |
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| author | Darya Volosevich Zhanna Shabunina Nikita Yurchenko Ruslan Mendagaliev Edem Slatenko Georgii Klimov Olga Klimova-Korsmik Aleksey Eremeev |
| author_facet | Darya Volosevich Zhanna Shabunina Nikita Yurchenko Ruslan Mendagaliev Edem Slatenko Georgii Klimov Olga Klimova-Korsmik Aleksey Eremeev |
| author_sort | Darya Volosevich |
| collection | DOAJ |
| description | This study investigates the influence of various heat treatment regimes on the structure and microhardness of the aluminum alloy AlSi10Mg processed by the L-DED method. The study considers heat treatment regimes for solid solution in the temperature range of 500−540 °C with holding times of 30–120 min, as well as artificial aging regimes in the temperature range of 160−190 °C with holding times of 4–8 h. As a result of studying the structure and mechanical properties of the heat-treated samples, it became clear that the optimal regime can be considered the regime of 500 °C for 30 min followed by 190 °C for 6 h. This regime leads to the formation of a uniform structure with the breakage of the eutectic network into separate spherical silicon inclusions. The microhardness in this case is 90 HV, which is 55% higher than the initial state. Using TEM, it was established that the reason for the increase in hardness is the formation of nanoscale inclusions β″ (Mg<sub>5</sub>Si<sub>6</sub>). |
| format | Article |
| id | doaj-art-7ecb3775bca44371b2dbd77b9462d028 |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-7ecb3775bca44371b2dbd77b9462d0282025-01-24T13:41:40ZengMDPI AGMetals2075-47012025-01-011519210.3390/met15010092Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10MgDarya Volosevich0Zhanna Shabunina1Nikita Yurchenko2Ruslan Mendagaliev3Edem Slatenko4Georgii Klimov5Olga Klimova-Korsmik6Aleksey Eremeev7World-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaWorld-Class Research Center “Advanced Digital Technologies”, State Marine Technical University, Saint Petersburg 190121, RussiaThis study investigates the influence of various heat treatment regimes on the structure and microhardness of the aluminum alloy AlSi10Mg processed by the L-DED method. The study considers heat treatment regimes for solid solution in the temperature range of 500−540 °C with holding times of 30–120 min, as well as artificial aging regimes in the temperature range of 160−190 °C with holding times of 4–8 h. As a result of studying the structure and mechanical properties of the heat-treated samples, it became clear that the optimal regime can be considered the regime of 500 °C for 30 min followed by 190 °C for 6 h. This regime leads to the formation of a uniform structure with the breakage of the eutectic network into separate spherical silicon inclusions. The microhardness in this case is 90 HV, which is 55% higher than the initial state. Using TEM, it was established that the reason for the increase in hardness is the formation of nanoscale inclusions β″ (Mg<sub>5</sub>Si<sub>6</sub>).https://www.mdpi.com/2075-4701/15/1/92aluminum alloyAlSi10MgL-DEDheat treatmentsolution annealingartificial aging |
| spellingShingle | Darya Volosevich Zhanna Shabunina Nikita Yurchenko Ruslan Mendagaliev Edem Slatenko Georgii Klimov Olga Klimova-Korsmik Aleksey Eremeev Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg Metals aluminum alloy AlSi10Mg L-DED heat treatment solution annealing artificial aging |
| title | Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg |
| title_full | Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg |
| title_fullStr | Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg |
| title_full_unstemmed | Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg |
| title_short | Investigation of the Heat Treatment Regimes on the Structure and Microhardness of Laser Direct Energy Deposition Aluminum Alloy AlSi10Mg |
| title_sort | investigation of the heat treatment regimes on the structure and microhardness of laser direct energy deposition aluminum alloy alsi10mg |
| topic | aluminum alloy AlSi10Mg L-DED heat treatment solution annealing artificial aging |
| url | https://www.mdpi.com/2075-4701/15/1/92 |
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