Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM)
AA5154 aluminum alloy wall was built using EBAM where the wall’s top layers were alloyed by depositing and then remelting a Mo powder-bed with simultaneous transfer of aluminum alloy from the AA5154 wire. The powder-beds with different concentrations of Mo such as 0.3, 0.6, 0.9 and 1.2 g/layer were...
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MDPI AG
2022-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/1/109 |
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| author | Anna Zykova Andrey Chumaevskii Andrey Vorontsov Nickolay Shamarin Aleksandr Panfilov Evgeny Knyazhev Evgeny Moskvichev Denis Gurianov Nickolai Savchenko Evgeny Kolubaev Sergei Tarasov |
| author_facet | Anna Zykova Andrey Chumaevskii Andrey Vorontsov Nickolay Shamarin Aleksandr Panfilov Evgeny Knyazhev Evgeny Moskvichev Denis Gurianov Nickolai Savchenko Evgeny Kolubaev Sergei Tarasov |
| author_sort | Anna Zykova |
| collection | DOAJ |
| description | AA5154 aluminum alloy wall was built using EBAM where the wall’s top layers were alloyed by depositing and then remelting a Mo powder-bed with simultaneous transfer of aluminum alloy from the AA5154 wire. The powder-beds with different concentrations of Mo such as 0.3, 0.6, 0.9 and 1.2 g/layer were used to obtain composite AA5154/Mo samples. All samples were characterized by inhomogeneous structures composed of as-deposited AA5154 matrix with coarse unreacted Mo articles and intermetallic compounds (IMC) such as Al<sub>12</sub>Mo, Al<sub>5</sub>Mo, Al<sub>8</sub>Mo<sub>3</sub>, Al<sub>18</sub>Mg<sub>3</sub>Mo<sub>2</sub> which formed in the vicinity of these Mo particles. The IMC content increased with the Mo powder-bed concentrations. The AA5154 matrix grains away from the Mo particles contained Al-Fe grain boundary precipitates. Mo-rich regions in the 0.3, 0.6, 0.9 and 1.2 g/layer Mo samples had maximum microhardness at the level of 2300, 2600, 11,500 and 9000 GPa, respectively. Sliding pin-on-steel disk test showed that wear of A5154/Mo composite reduced as compared to that of as-deposited AA5154 due to composite structure, higher microhardness as a well as tribooxidation of Al/Mo IMCs and generation of mechanically mixed layers containing low shear strength Mo<sub>8</sub>O<sub>23</sub> and Al<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> oxides. |
| first_indexed | 2024-03-10T00:56:22Z |
| format | Article |
| id | doaj.art-08208614fa984710a258a2cd28ad6348 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T00:56:22Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-08208614fa984710a258a2cd28ad63482023-11-23T14:42:28ZengMDPI AGMetals2075-47012022-01-0112110910.3390/met12010109Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM)Anna Zykova0Andrey Chumaevskii1Andrey Vorontsov2Nickolay Shamarin3Aleksandr Panfilov4Evgeny Knyazhev5Evgeny Moskvichev6Denis Gurianov7Nickolai Savchenko8Evgeny Kolubaev9Sergei Tarasov10Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 634055 Tomsk, RussiaAA5154 aluminum alloy wall was built using EBAM where the wall’s top layers were alloyed by depositing and then remelting a Mo powder-bed with simultaneous transfer of aluminum alloy from the AA5154 wire. The powder-beds with different concentrations of Mo such as 0.3, 0.6, 0.9 and 1.2 g/layer were used to obtain composite AA5154/Mo samples. All samples were characterized by inhomogeneous structures composed of as-deposited AA5154 matrix with coarse unreacted Mo articles and intermetallic compounds (IMC) such as Al<sub>12</sub>Mo, Al<sub>5</sub>Mo, Al<sub>8</sub>Mo<sub>3</sub>, Al<sub>18</sub>Mg<sub>3</sub>Mo<sub>2</sub> which formed in the vicinity of these Mo particles. The IMC content increased with the Mo powder-bed concentrations. The AA5154 matrix grains away from the Mo particles contained Al-Fe grain boundary precipitates. Mo-rich regions in the 0.3, 0.6, 0.9 and 1.2 g/layer Mo samples had maximum microhardness at the level of 2300, 2600, 11,500 and 9000 GPa, respectively. Sliding pin-on-steel disk test showed that wear of A5154/Mo composite reduced as compared to that of as-deposited AA5154 due to composite structure, higher microhardness as a well as tribooxidation of Al/Mo IMCs and generation of mechanically mixed layers containing low shear strength Mo<sub>8</sub>O<sub>23</sub> and Al<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> oxides.https://www.mdpi.com/2075-4701/12/1/109additive manufacturingaluminum alloymolybdenumintermetallic compoundswear |
| spellingShingle | Anna Zykova Andrey Chumaevskii Andrey Vorontsov Nickolay Shamarin Aleksandr Panfilov Evgeny Knyazhev Evgeny Moskvichev Denis Gurianov Nickolai Savchenko Evgeny Kolubaev Sergei Tarasov Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) Metals additive manufacturing aluminum alloy molybdenum intermetallic compounds wear |
| title | Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) |
| title_full | Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) |
| title_fullStr | Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) |
| title_full_unstemmed | Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) |
| title_short | Microstructural Evolution of AA5154 Layers Intermixed with Mo Powder during Electron Beam Wire-Feed Additive Manufacturing (EBAM) |
| title_sort | microstructural evolution of aa5154 layers intermixed with mo powder during electron beam wire feed additive manufacturing ebam |
| topic | additive manufacturing aluminum alloy molybdenum intermetallic compounds wear |
| url | https://www.mdpi.com/2075-4701/12/1/109 |
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