Ultra-high energy absorption high-entropy alloy syntactic foam
| Autor: | Tian-Wei Liu, Hai-Ying Wang, Lanhong Dai, Jin Meng |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Syntactic foam Mechanical Engineering Alloy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Matrix (mathematics) Fracture toughness chemistry Mechanics of Materials Cenosphere Aluminium Ceramics and Composites engineering Composite material 0210 nano-technology Absorption (electromagnetic radiation) Ductility |
| Zdroj: | Composites Part B: Engineering. 207:108563 |
| ISSN: | 1359-8368 |
| Popis: | Metal matrix syntactic foams (MMSFs) are a class of fascinating particulate composites consisting of metal matrix and hollow spheres, which are promising in the light-weight structural and energy absorbing applications. However, the energy absorption capacity of most MMSFs is suffocated inevitably by relatively low strength of traditional metal matrix alloys, such as widely used aluminum and magnesium alloys. Here, we developed a novel MMSF with CoCrFeMnNi high entropy alloy matrix and alumina cenosphere fillers by pressure infiltration, which exhibits an ultra-high energy absorption capacity of 242.8 ± 20.6 MJ m−3, among the highest reported values of MMSFs. We show that this exceptional energy absorption capacity stems from excellent combination of high strength of alumina cenospheres and super-large ductility and fracture toughness of CoCrFeMnNi high entropy alloy. These results shed new light into design of advanced light-weight and energy absorbing materials. |
| Databáze: | OpenAIRE |
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