Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition
In the present work, free-cutting aluminum alloy AA6026 with 1.1 wt.% bismuth addition was fabricated by different melt preparation methods in order to investigate whether the melt preparation route affects the solidification sequence and thus has an influence on the machinability of the alloy. All...
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MDPI AG
2021-04-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/4/424 |
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| author | Simon Rečnik Milan Bizjak Jožef Medved Peter Cvahte Blaž Karpe Aleš Nagode |
| author_facet | Simon Rečnik Milan Bizjak Jožef Medved Peter Cvahte Blaž Karpe Aleš Nagode |
| author_sort | Simon Rečnik |
| collection | DOAJ |
| description | In the present work, free-cutting aluminum alloy AA6026 with 1.1 wt.% bismuth addition was fabricated by different melt preparation methods in order to investigate whether the melt preparation route affects the solidification sequence and thus has an influence on the machinability of the alloy. All experiments were designed to simulate variable industrial conditions: addition of bismuth in an induction melting furnace, addition of bismuth in an electric resistance holding furnace, addition of bismuth together with grain refiner, effect of holding time and melt temperature before casting. Detailed thermodynamic analyses (DSC, Thermo-Calc) and microstructural characterization (SEM-EDS, XRD) have been performed to explain the solidification sequence, microstructure development and especially formation of the intermetallic Mg<sub>3</sub>Bi<sub>2</sub> phase. |
| first_indexed | 2024-03-10T12:19:39Z |
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| id | doaj.art-b739ae7cfbd645dca9245d6c22626feb |
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| language | English |
| last_indexed | 2024-03-10T12:19:39Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
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| series | Crystals |
| spelling | doaj.art-b739ae7cfbd645dca9245d6c22626feb2023-11-21T15:36:46ZengMDPI AGCrystals2073-43522021-04-0111442410.3390/cryst11040424Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth AdditionSimon Rečnik0Milan Bizjak1Jožef Medved2Peter Cvahte3Blaž Karpe4Aleš Nagode5Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, SI-1000 Ljubljana, SloveniaFaculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, SI-1000 Ljubljana, SloveniaFaculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, SI-1000 Ljubljana, SloveniaImpol 2000, d. d., Partizanska 38, SI-2310 Slovenska Bistrica, SloveniaFaculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, SI-1000 Ljubljana, SloveniaFaculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Cesta 12, SI-1000 Ljubljana, SloveniaIn the present work, free-cutting aluminum alloy AA6026 with 1.1 wt.% bismuth addition was fabricated by different melt preparation methods in order to investigate whether the melt preparation route affects the solidification sequence and thus has an influence on the machinability of the alloy. All experiments were designed to simulate variable industrial conditions: addition of bismuth in an induction melting furnace, addition of bismuth in an electric resistance holding furnace, addition of bismuth together with grain refiner, effect of holding time and melt temperature before casting. Detailed thermodynamic analyses (DSC, Thermo-Calc) and microstructural characterization (SEM-EDS, XRD) have been performed to explain the solidification sequence, microstructure development and especially formation of the intermetallic Mg<sub>3</sub>Bi<sub>2</sub> phase.https://www.mdpi.com/2073-4352/11/4/424free-machining AA6xxx alloybismuthMg<sub>3</sub>Bi<sub>2</sub> phasesolidification model |
| spellingShingle | Simon Rečnik Milan Bizjak Jožef Medved Peter Cvahte Blaž Karpe Aleš Nagode Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition Crystals free-machining AA6xxx alloy bismuth Mg<sub>3</sub>Bi<sub>2</sub> phase solidification model |
| title | Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition |
| title_full | Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition |
| title_fullStr | Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition |
| title_full_unstemmed | Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition |
| title_short | Mechanism of the Mg<sub>3</sub>Bi<sub>2</sub> Phase Formation in Pb-Free Aluminum 6xxx Alloy with Bismuth Addition |
| title_sort | mechanism of the mg sub 3 sub bi sub 2 sub phase formation in pb free aluminum 6xxx alloy with bismuth addition |
| topic | free-machining AA6xxx alloy bismuth Mg<sub>3</sub>Bi<sub>2</sub> phase solidification model |
| url | https://www.mdpi.com/2073-4352/11/4/424 |
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