Effect of surface characteristics on electrical resistivity of shot peened SiCP/AA6061 composite by 4PCPs method
| Autor: | B. Prasad Kumar, M. Ramakotaiah, G. Bhanodaya Reddy, J. Venumurali |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Composite number Peening 02 engineering and technology 021001 nanoscience & nanotechnology Shot peening 01 natural sciences Casting Grain size law.invention Full width at half maximum Optical microscope Electrical resistivity and conductivity law 0103 physical sciences Composite material 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 19:440-443 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2019.07.632 |
| Popis: | The present study evaluates the effect of shot peening time on the surface characteristics and electrical resistivity of SiCP/AA6061 composite fabricated via stir casting route. The composite microstructure after casting was examined by optical microscopy. The surface characteristics and electrical resistivity were analyzed by X-Ray Diffraction (XRD) and Four-Point Collinear Probes (4PCPs) methods respectively. The results showed that the grain size decreases and Full Width at Half Maximum (FWHM) increases with increasing the shot peening time. The grain refinement (33.7 nm) and FWHM broadening (0.29°) of the sample after 140 s peening caused to lower the electrical resistivity (0.09 Ω-cm). The effect of work-hardening induced by shot peening have influenced the surface characteristics and the electrical resistivity of SiCP/AA6061 composite. |
| Databáze: | OpenAIRE |
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