Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering
In this study, a novel circular Al honeycomb with hierarchical porous size was fabricated by powder sintering at different temperatures (400–600 °C), utilizing an Al/Mg powder mixture as metallurgical bonding layers between hollow Al tube arrays. It aimed to investigate the effect of sintering tempe...
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Elsevier
2025-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425000870 |
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| author | Zhigang Xu Enpeng Guo Dayong Shen Zhi Yang Chong Xie Jian Peng Qiang Shen Chuanbin Wang |
| author_facet | Zhigang Xu Enpeng Guo Dayong Shen Zhi Yang Chong Xie Jian Peng Qiang Shen Chuanbin Wang |
| author_sort | Zhigang Xu |
| collection | DOAJ |
| description | In this study, a novel circular Al honeycomb with hierarchical porous size was fabricated by powder sintering at different temperatures (400–600 °C), utilizing an Al/Mg powder mixture as metallurgical bonding layers between hollow Al tube arrays. It aimed to investigate the effect of sintering temperature on the phase evolution, the metallurgical bonding at the powder-tube interfaces, and the diffusion behavior of Mg in the inner and outer walls of the tubes in the honeycombs. The results indicated that Al₃Mg₂ and Al₁₂Mg₁₇ phases formed in the powder layers at 400 °C, while only the Al(Mg) solid solution phase was present above 450 °C. As the temperature increased, the diffusion depth of Mg in the inner and outer walls of the tubes increased, which broadened the bidirectional Mg concentration gradient and corresponding bidirectional microhardness structure. This resulted in higher Mg content and enhanced microhardness at the center of the tube walls. Meanwhile, the rise in temperature enhanced the metallurgical bonding both within the powder layers and between the powders and the tube walls, leading to improved compressive performance of the honeycombs. The honeycomb sintered at 600 °C, in general, exhibited the optimal mechanical properties, with a plateau stress of 63.2 MPa. This study clearly elucidated the strengthening mechanism of metallurgical bonding at the powder-tube interfaces and the diffusion behavior of Mg in both the inner and outer walls of the Al tubes at various sintering temperatures, which offered significant theoretical insights for the preparation and performance optimization of circular Al honeycombs. |
| format | Article |
| id | doaj-art-79315492a02f4fe4a0baef2150657ca3 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-79315492a02f4fe4a0baef2150657ca32025-01-19T06:26:05ZengElsevierJournal of Materials Research and Technology2238-78542025-03-013511131125Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sinteringZhigang Xu0Enpeng Guo1Dayong Shen2Zhi Yang3Chong Xie4Jian Peng5Qiang Shen6Chuanbin Wang7Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, China; State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Corresponding author. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, China.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, ChinaHubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, ChinaHubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, ChinaHubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, ChinaState Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, ChinaState Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, ChinaState Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Corresponding author.In this study, a novel circular Al honeycomb with hierarchical porous size was fabricated by powder sintering at different temperatures (400–600 °C), utilizing an Al/Mg powder mixture as metallurgical bonding layers between hollow Al tube arrays. It aimed to investigate the effect of sintering temperature on the phase evolution, the metallurgical bonding at the powder-tube interfaces, and the diffusion behavior of Mg in the inner and outer walls of the tubes in the honeycombs. The results indicated that Al₃Mg₂ and Al₁₂Mg₁₇ phases formed in the powder layers at 400 °C, while only the Al(Mg) solid solution phase was present above 450 °C. As the temperature increased, the diffusion depth of Mg in the inner and outer walls of the tubes increased, which broadened the bidirectional Mg concentration gradient and corresponding bidirectional microhardness structure. This resulted in higher Mg content and enhanced microhardness at the center of the tube walls. Meanwhile, the rise in temperature enhanced the metallurgical bonding both within the powder layers and between the powders and the tube walls, leading to improved compressive performance of the honeycombs. The honeycomb sintered at 600 °C, in general, exhibited the optimal mechanical properties, with a plateau stress of 63.2 MPa. This study clearly elucidated the strengthening mechanism of metallurgical bonding at the powder-tube interfaces and the diffusion behavior of Mg in both the inner and outer walls of the Al tubes at various sintering temperatures, which offered significant theoretical insights for the preparation and performance optimization of circular Al honeycombs.http://www.sciencedirect.com/science/article/pii/S2238785425000870Circular Al honeycombPowder sinteringSintering temperatureMg diffusionMechanical properties |
| spellingShingle | Zhigang Xu Enpeng Guo Dayong Shen Zhi Yang Chong Xie Jian Peng Qiang Shen Chuanbin Wang Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering Journal of Materials Research and Technology Circular Al honeycomb Powder sintering Sintering temperature Mg diffusion Mechanical properties |
| title | Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering |
| title_full | Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering |
| title_fullStr | Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering |
| title_full_unstemmed | Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering |
| title_short | Sintering temperature dependence of microstructure evolution and compression performance of a novel circular Al honeycomb fabricated via powder sintering |
| title_sort | sintering temperature dependence of microstructure evolution and compression performance of a novel circular al honeycomb fabricated via powder sintering |
| topic | Circular Al honeycomb Powder sintering Sintering temperature Mg diffusion Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425000870 |
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