Structural and mechanical properties of aluminium-based composites processed by explosive compaction
| Autor: | Vladimir Promakhov, Ilya Zhukov, Sergey Vorozhtsov, Alexander Vorozhtsov, Olga Kudryashova |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Explosive material General Chemical Engineering Composite number Compaction chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Compressive strength chemistry Aluminium visual_art 0103 physical sciences visual_art.visual_art_medium Ceramic Composite material 0210 nano-technology Elastic modulus Powder mixture |
| Zdroj: | Powder Technology. 313:251-259 |
| ISSN: | 0032-5910 |
| DOI: | 10.1016/j.powtec.2017.03.027 |
| Popis: | Al based materials including Al-nanodiamonds and Al-Al2O3 processed by explosive compaction are considered in this paper. Improvements of composite properties were obtained by the introduction of diamond and ceramic nanoparticles (10 wt% of each) into the mixture of aluminium nanopowder. Various schemes and conditions, including a theoretical calculation of the explosion process, were suggested and discussed. Physical and mechanical properties of composites reinforced with nanoparticles are determined and discussed with special consideration paid to process conditions. The results show an increase in the hardness, compressive strength and elastic modulus of the composites after explosive compaction with the introduction of nanoparticles into the powder mixture. Improvement of mechanical properties of composites compared to pure aluminium is determined by dispersion strengthening, small material grain size and internal compressive stresses caused by dynamic shock-wave compaction processing. |
| Databáze: | OpenAIRE |
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