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Iranian Journal of Materials Science and Engineering، جلد ۱۶، شماره ۳، صفحات ۰-۰
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چکیده فارسی مقاله
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عنوان انگلیسی Evaluation of Simultaneous Effect of Melt Filtration and Cooling Rate on Tensile Properties of A356 Cast Alloy
چکیده انگلیسی مقاله The combined influence of both melt filtration and cooling rate on the microstructure features and mechanical properties of A356 cast alloy was studied. A step casting model with five different thicknesses was used to obtain different cooling rates. The effect of melt filtration was studied by using of 10 and 20 ppi ceramic foam filters in the runner. Results showed that secondary dendrite arm spacing decreased from 80 μm to 34 μm with increasing cooling rate. Use of ceramic foam filters in the runner led to the reduction of melt velocity and surface turbulence, which prevented incorporation of oxide films and air in the melt, and consequently had an overall beneficial effect on the quality of the castings. A matrix index, which is the representative of both SDAS and microporosity content, was defined to consider the simultaneous effect of melt filtration and cooling rates on UTS variations. Also, the fracture surface study of test bars cast using 10 and 20 ppi ceramic foam filters showed features associated with ductile fracture.  
کلیدواژه‌های انگلیسی مقاله Aluminum alloys, microstructure, tensile properties, defects
نویسندگان مقاله | A. Khakzadshahandashti
Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran


| N. Varahram
Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran


| P. Davami
Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran


| M. Pirmohammadi
Department of Mechanical Engineering, Pardis Branch, Islamic Azad University, Tehran, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-685-2&slc_lang=en&sid=1
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/454/article-454-1557043.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Research paper
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