Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route
A2024 alloy foams were fabricated by two methods. In the first method, the melt was thickened by Mg, which acts as an alloying element (melt route). In the second method, the melt was thickened by using primary crystals at a semi-solid temperature with a solid fraction of 20% (semi-solid route). A20...
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| Format: | Article |
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MDPI AG
2019-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/2/153 |
| _version_ | 1819100541653876736 |
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| author | Takashi Kuwahara Taro Osaka Mizuki Saito Shinsuke Suzuki |
| author_facet | Takashi Kuwahara Taro Osaka Mizuki Saito Shinsuke Suzuki |
| author_sort | Takashi Kuwahara |
| collection | DOAJ |
| description | A2024 alloy foams were fabricated by two methods. In the first method, the melt was thickened by Mg, which acts as an alloying element (melt route). In the second method, the melt was thickened by using primary crystals at a semi-solid temperature with a solid fraction of 20% (semi-solid route). A2024 alloy foams fabricated through the semi-solid route had coarse and uneven pores. This led to slightly brittle fracture of the foams, which resulted in larger energy absorption efficiency than that of the foams fabricated through the melt route. Moreover, A2024 alloy foams fabricated through the semi-solid route had a coarser grain size because of the coarse primary crystals. However, by preventing the decrease in the alloying element Mg, the θ/θ’ phase was suppressed. Additionally, by preventing the precipitation of the S′ phase, the amount of Guinier-Preston-Bagaryatsky (GPB) zone increased. This resulted in a larger plateau stress. |
| first_indexed | 2024-12-22T01:04:25Z |
| format | Article |
| id | doaj.art-6558b4daeeab468e823f4f5cb753644d |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-22T01:04:25Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-6558b4daeeab468e823f4f5cb753644d2022-12-21T18:44:07ZengMDPI AGMetals2075-47012019-01-019215310.3390/met9020153met9020153Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid RouteTakashi Kuwahara0Taro Osaka1Mizuki Saito2Shinsuke Suzuki3Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JapanFaculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JapanFaculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JapanFaculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, JapanA2024 alloy foams were fabricated by two methods. In the first method, the melt was thickened by Mg, which acts as an alloying element (melt route). In the second method, the melt was thickened by using primary crystals at a semi-solid temperature with a solid fraction of 20% (semi-solid route). A2024 alloy foams fabricated through the semi-solid route had coarse and uneven pores. This led to slightly brittle fracture of the foams, which resulted in larger energy absorption efficiency than that of the foams fabricated through the melt route. Moreover, A2024 alloy foams fabricated through the semi-solid route had a coarser grain size because of the coarse primary crystals. However, by preventing the decrease in the alloying element Mg, the θ/θ’ phase was suppressed. Additionally, by preventing the precipitation of the S′ phase, the amount of Guinier-Preston-Bagaryatsky (GPB) zone increased. This resulted in a larger plateau stress.https://www.mdpi.com/2075-4701/9/2/153semi-solidaluminum foamprimary crystalscompression testpore morphologyprecipitation phaseage hardening |
| spellingShingle | Takashi Kuwahara Taro Osaka Mizuki Saito Shinsuke Suzuki Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route Metals semi-solid aluminum foam primary crystals compression test pore morphology precipitation phase age hardening |
| title | Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route |
| title_full | Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route |
| title_fullStr | Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route |
| title_full_unstemmed | Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route |
| title_short | Compressive Properties of A2024 Alloy Foam Fabricated through a Melt Route and a Semi-Solid Route |
| title_sort | compressive properties of a2024 alloy foam fabricated through a melt route and a semi solid route |
| topic | semi-solid aluminum foam primary crystals compression test pore morphology precipitation phase age hardening |
| url | https://www.mdpi.com/2075-4701/9/2/153 |
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