Spark plasma sintering of a high-energy ball milled Mg-10 wt% Al alloy
| Autor: | Tushar Borkar, J. Christudasjustus, M.U.F. Khan, Rajeev Kumar Gupta, Amit Patil |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Materials science Scanning electron microscope Alloy Spark plasma sintering Sintering 02 engineering and technology engineering.material 01 natural sciences 0103 physical sciences Magnesium Spectroscopy lcsh:Mining engineering. Metallurgy 010302 applied physics Nanocrystalline alloy Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Microstructure Nanocrystalline material Grain size High energy ball milling Corrosion Mechanics of Materials engineering 0210 nano-technology |
| Zdroj: | Journal of Magnesium and Alloys, Vol 8, Iss 2, Pp 319-328 (2020) |
| ISSN: | 2213-9567 |
| Popis: | The influence of spark plasma sintering (SPS) temperature on microstructure, hardness and corrosion behavior of a high-energy ball milled Mg-10 wt% Al alloy was investigated in this work. The holding time and sintering pressure for SPS were kept constant while varying the sintering temperature from 200 to 350 °C. The grain size and microstructure were studied using X-ray diffraction analysis, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Archimedes’ based density measurement. Corrosion behavior was investigated using potentiodynamic polarization tests. The nanocrystalline regime (grain size < 100 nm) was maintained even after SPS up to 350 °C. The density of the alloy increased with increasing the SPS temperature. Vickers’ hardness and corrosion performance improved up to 300 °C followed by a decrease after SPS at 350 °C. Possible reasons for densification, strengthening, and corrosion behavior have been discussed in the light of reduced porosity and microstructural changes. |
| Databáze: | OpenAIRE |
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