Mechanical Properties and Corrosion Behavior of WZ73 Mg Alloy/SiCp Composite Fabricated by Stir Casting Method
| Autor: | Hsu-Chieh Liu, Chun Chiu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:TN1-997
Materials science Alloy Composite number 02 engineering and technology engineering.material mechanical properties 01 natural sciences metal matrix composites Corrosion Matrix (chemical analysis) Metal 0103 physical sciences General Materials Science Ceramic Composite material Corrosion behavior lcsh:Mining engineering. Metallurgy 010302 applied physics corrosion Metals and Alloys 021001 nanoscience & nanotechnology WZ73 Mg alloy visual_art Stir casting visual_art.visual_art_medium engineering 0210 nano-technology |
| Zdroj: | Metals, Vol 8, Iss 6, p 424 (2018) Metals Volume 8 Issue 6 |
| ISSN: | 2075-4701 |
| Popis: | Low strength, which limits the industrial applications of Mg alloys, can be improved by forming Mg-based metal matrix composites (MMC) reinforced with ceramic particles. In this study, a Mg-based MMC was synthesized by introducing SiC particles into a WZ73 Mg alloy using the stir casting method. The effects of the SiC particles on the mechanical properties and corrosion behavior of WZ73 alloys were studied. The results showed that an addition of 1.5 vol % of SiC enhanced the strength of a WZ73 alloy but reduced the corrosion resistance. A further increase of SiC to 2.5 vol % had no effects on strength and corrosion behavior, which was attributed to the agglomeration of SiC particles. A microstructural analysis indicated that the addition of SiC did not alter the morphology and distribution of the secondary phase in the WZ73 alloy. Thus, the improved strength was attributed to the reinforcement of SiC and the refinement of the Mg grain, while the degraded corrosion resistance was the result of the grain refinement of Mg and the presence of the Mg/SiC interface in the vicinity of the secondary phase, which breaks the continuity of the Mg matrix and results in a higher corrosion rate. |
| Databáze: | OpenAIRE |
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