Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method
Closed-cell A356 aluminum alloy foams refined and modified were successfully fabricated by using barite and calcium carbonate as thickening and foaming agents, respectively. A melt treatment consisting of adding master alloys of Al-5Ti-1B and Al-10Sr for refining the dendritic microstructure and mod...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/3/622 |
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| author | Alberto Jesús Poot Manzanilla Alejandro Cruz Ramírez Eduardo Colin García José Antonio Romero Serrano Ricardo Gerardo Sánchez Alvarado Miguel Ángel Suárez Rosales |
| author_facet | Alberto Jesús Poot Manzanilla Alejandro Cruz Ramírez Eduardo Colin García José Antonio Romero Serrano Ricardo Gerardo Sánchez Alvarado Miguel Ángel Suárez Rosales |
| author_sort | Alberto Jesús Poot Manzanilla |
| collection | DOAJ |
| description | Closed-cell A356 aluminum alloy foams refined and modified were successfully fabricated by using barite and calcium carbonate as thickening and foaming agents, respectively. A melt treatment consisting of adding master alloys of Al-5Ti-1B and Al-10Sr for refining the dendritic microstructure and modifying the primary eutectic silicon, respectively, were included in the foaming process. The microstructure and mechanical properties of the foams manufactured were analyzed and compared with foams produced without the refining and modifying treatments. The secondary dendritic arm spacing (SDAS) was determined by optical measurements. Lower SDAS values were obtained in foam regions closer to the mold walls due to the high solidification rate imposed during the cooling step and a decrease in the SDAS values for the foams produced with the addition of the Al-5Ti-1B master alloy was evident. Additionally, the addition of the Al-10Sr master alloy caused the formation of solid solution dendrites and a fine irregular fibrous form of silicon. Foams produced with the melt treatment exhibit a good combination of structure and mechanical properties. Therefore, the melt route established is a feasible way to improve foam performance where the lowest SDAS and the highest mechanical properties were obtained for the closed-cell foams produced. |
| first_indexed | 2024-03-11T06:10:36Z |
| format | Article |
| id | doaj.art-af60f6d38f10414286915a62cd09e970 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T06:10:36Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-af60f6d38f10414286915a62cd09e9702023-11-17T12:40:19ZengMDPI AGMetals2075-47012023-03-0113362210.3390/met13030622Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming MethodAlberto Jesús Poot Manzanilla0Alejandro Cruz Ramírez1Eduardo Colin García2José Antonio Romero Serrano3Ricardo Gerardo Sánchez Alvarado4Miguel Ángel Suárez Rosales5Instituto Politécnico Nacional—ESIQIE, UPALM, Ciudad de México 07738, MexicoInstituto Politécnico Nacional—ESIQIE, UPALM, Ciudad de México 07738, MexicoInstituto Politécnico Nacional—ESIQIE, UPALM, Ciudad de México 07738, MexicoInstituto Politécnico Nacional—ESIQIE, UPALM, Ciudad de México 07738, MexicoInstituto Politécnico Nacional—ESIQIE, UPALM, Ciudad de México 07738, MexicoUniversidad Autónoma Metropolitana—Azcapotzalco, Av. San Pablo 180, Col. Reynosa T., Ciudad de México 02200, MexicoClosed-cell A356 aluminum alloy foams refined and modified were successfully fabricated by using barite and calcium carbonate as thickening and foaming agents, respectively. A melt treatment consisting of adding master alloys of Al-5Ti-1B and Al-10Sr for refining the dendritic microstructure and modifying the primary eutectic silicon, respectively, were included in the foaming process. The microstructure and mechanical properties of the foams manufactured were analyzed and compared with foams produced without the refining and modifying treatments. The secondary dendritic arm spacing (SDAS) was determined by optical measurements. Lower SDAS values were obtained in foam regions closer to the mold walls due to the high solidification rate imposed during the cooling step and a decrease in the SDAS values for the foams produced with the addition of the Al-5Ti-1B master alloy was evident. Additionally, the addition of the Al-10Sr master alloy caused the formation of solid solution dendrites and a fine irregular fibrous form of silicon. Foams produced with the melt treatment exhibit a good combination of structure and mechanical properties. Therefore, the melt route established is a feasible way to improve foam performance where the lowest SDAS and the highest mechanical properties were obtained for the closed-cell foams produced.https://www.mdpi.com/2075-4701/13/3/622closed-cell foamaluminummicrostructuresecondary dendritic arm spacingrefiningmodifying |
| spellingShingle | Alberto Jesús Poot Manzanilla Alejandro Cruz Ramírez Eduardo Colin García José Antonio Romero Serrano Ricardo Gerardo Sánchez Alvarado Miguel Ángel Suárez Rosales Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method Metals closed-cell foam aluminum microstructure secondary dendritic arm spacing refining modifying |
| title | Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method |
| title_full | Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method |
| title_fullStr | Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method |
| title_full_unstemmed | Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method |
| title_short | Production of Refined and Modified Closed-Cell Aluminum Foams by Melt-Foaming Method |
| title_sort | production of refined and modified closed cell aluminum foams by melt foaming method |
| topic | closed-cell foam aluminum microstructure secondary dendritic arm spacing refining modifying |
| url | https://www.mdpi.com/2075-4701/13/3/622 |
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