Effect of SiC Weight Percentage and Sintering Duration on Microstructural and Mechanical Behaviour of Al6061/SiC Composites Produced by Powder Metallurgy Technique
| Autor: | Mulugundam Siva Surya |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Toughness Materials science Composite number Charpy impact test Sintering 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials Specific strength Rockwell scale Grain growth Powder metallurgy 0103 physical sciences Composite material 0210 nano-technology |
| Zdroj: | Silicon. 14:2731-2739 |
| ISSN: | 1876-9918 1876-990X |
| DOI: | 10.1007/s12633-021-01053-z |
| Popis: | Aluminum-based metal matrix composites (MMC) are very popularly used in the aircraft, automotive, and armament industries because of their high young’s modulus, specific strength, and enhanced wear properties. In this research, Al6061/SiC composites are produced using the powder metallurgy technique by varying Wt.% SiC (0, 5, 10 and 15) and sintering duration (1, 2 and 3 h). The effect of SiC Wt.% and sintering durations on the composites properties are examined using a scanning electron microscope, Rockwell hardness test, and Charpy impact test. Both Wt.%SiC and sintering duration substantially impacted Al6061/SiC composites mechanical properties. The morphological study of 15Wt.%SiC composite sintered for 3 h confirms the absence of microcracks and SiC clusters with good interfacial bonding between Al6061/SiC. It is observed that long sintering duration stimulated thermally activated diffusion-controlled grain growth, which adversely affected the mechanical properties and rendered superior characteristics that are otherwise impossible. The hardness and toughness of composite increased from 73 to 81 HRB and 3.2 J to 5.2 J, respectively, under the best process conditions. |
| Databáze: | OpenAIRE |
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