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Iranian Journal of Materials Science and Engineering، جلد ۱، شماره ۲، صفحات ۹-۱۵
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عنوان انگلیسی EFFECTS OF REINFORCEMENT VOLUME FRACTION, REINFORCEMENT SIZE AND SOLUTION HEAT TREATMENT ON THE MICROSTRUCTURE OF THE TWO DIFFERENTLY PROCESSED A35&SICPCOMOSITES
چکیده انگلیسی مقاله In this study different volume fractions of SiC particles of various sizes were introduced into the semisolid A356 aluminum alloy by a mechanical stirrer. Then the slurry was poured into a permanent die of certain dimensions either when the metal alloy was partially solid (semisolid-semisolid or SS route) or after reheating to above the liquidus temperature of the alloy (semisolid-liquid or SL route). Both the SS and SL composite samples were solution-treated at 520°C for 8 hours followed by quenching in water at room temperature. Microstructural characterization studies have been conducted on both the SL and SS samples to quantify the effects of the size andcontent of the SiC particles as well as the solutionizing treatment on the morphology and size ofthe eutectic silicon particles and the matrix grain (globule) size. The results were rationalized in terms of the different nucleation, fragmentation, spherodization and coarsening events, which had taken place during the processing of these composites. Finally the impact of these microstructural features in improving the wear properties of the composites has been discussed.
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نویسندگان مقاله اخلاقی f | akhlaghi f
faculty of eng., tehran university tehran, iran

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

زاهدی h | zahedi h


شریفی | sharifi m


نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1-24&slc_lang=fa&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه سرامیک
نوع مقاله منتشر شده Research paper
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