Effect of Ceramic Particulate Addition on Aluminium Based Ex-Situ and In-Situ Formed Metal Matrix Composites
| Autor: | B. Gobalakrishnan, P.R. Lakshminarayanan, C. Rajaravi, Gobikrishnan Udhayakumar |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Scanning electron microscope Metals and Alloys chemistry.chemical_element Condensed Matter Physics Microstructure law.invention Rockwell scale chemistry Optical microscope Mechanics of Materials Aluminium law visual_art Ultimate tensile strength Materials Chemistry visual_art.visual_art_medium Ceramic Composite material Diffractometer |
| Zdroj: | Metals and Materials International. 27:3695-3708 |
| ISSN: | 2005-4149 1598-9623 |
| Popis: | An attempt was made to synthesis ex-situ formed Al/SiC MMC and in-situ formed Al/TiB2 MMC using stir casting method with different weight percentage of the ceramic particulates such as 4 wt%, 6 wt% and 8 wt% respectively. Significant improvements of mechanical properties were observed when the addition of reinforcement particulates increased from 2 to 8 wt%. The tensile strength and Rockwell hardness of the ex-situ and in-situ formed composites were conducted as per the ASTM standard E08-16 and ASTM standard E18-15 respectively. The in-situ formed TiB2 MMC has superior mechanical properties such as 0.2% proof strength, tensile strength and hardness as compared to ex-situ SiC MMC as well as base metal. It is also concluded that the mechanical properties were increased with increase in wt% of reinforcement particles additions. The Optical Microscopy and Scanning Electron Microscopy were used to examine the size and uniformity of reinforcement particles whereas the Energy Dispersive X-ray analysis, X-ray diffractometer and Element Mapping analysis were used to confirm the presence of TiB2 particles. |
| Databáze: | OpenAIRE |
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