| Eutectic high entropy alloy syntactic foam | |
Meng J(孟锦) ; Qiao Y(乔宇); Liu TW(刘天威); Tan YY(谭园园); Cao FH(曹富华); Chen Y(陈艳); Wang HY(汪海英); Dai LH(戴兰宏)
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| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 2023-06-20 | |
| Volume | 149Pages:177-189 |
| ISSN | 1005-0302 |
| Abstract | High strength metallic foams have a wide range of applications in engineering as lightweight structural and energy absorbing materials. However, it is challenging to obtain metallic foam with both good energy absorption performance and high strength. Here, we developed a novel metal matrix syntactic foam fabri cated with AlCoCrFeNi2.1 eutectic high entropy alloy and alumina cenospheres that exhibits a remarkable combination of high strength and energy absorption performance under both quasi static and dynamic compression. The porous structure of syntactic foam fully exploits the properties of the AlCoCrFeNi2.1 alloy matrix with a unique FCC/B2 dual phase eutectic microstructure and thus yields exceptional per formance. We discovered that this dual phase microstructure not only provides high strength but also allows the pores to collapse in a progressive and diffusive way, which enables the formation of a high and smooth energy absorption platform. It is found that the heterogeneity between the two phases in the matrix can provide back stress strengthening, and it also induces multiple micro shear bands and microcracks as additional energy dissipation modes as the deformation proceeds. This unique mechanism ensures the strength of microstructures and makes them fracture promptly, which causes the balance of strengthening and softening on the macro scale. This work opens the avenue for developing advanced high strength lightweight structural and energy absorbing materials.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Eutectic high entropy alloy Foams Metal matrix composites (MMCs) Energy absorption |
| DOI | 10.1016/j.jmst.2022.12.009 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000949768900001 |
| WOS Research Area | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science ; Metallurgy & Metallurgical Engineering |
| Funding Organization | NSFC [11972346, 11672316, U2141204] ; Key Research Program of the Chinese Academy of Sciences [XDB22040302] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040303, 11988102] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; [ZDRW CN 2021 2 3] ; [11790292] |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Dai, LH (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91852 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 4.Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China |
| Recommended Citation GB/T 7714 | Meng J,Qiao Y,Liu TW,et al. Eutectic high entropy alloy syntactic foam[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,149:177-189.Rp_Au:Dai, LH (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| APA | 孟锦.,乔宇.,刘天威.,谭园园.,曹富华.,...&戴兰宏.(2023).Eutectic high entropy alloy syntactic foam.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,149,177-189. |
| MLA | 孟锦,et al."Eutectic high entropy alloy syntactic foam".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 149(2023):177-189. |
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| Jp2023Fa190.pdf（6875KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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