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Iranian Journal of Materials Science and Engineering، جلد ۱۵، شماره ۴، صفحات ۰-۰
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عنوان انگلیسی Microstructure and Mechanical Behavior of As Cast and Hot Extruded AlZnMgCu Alloy with Rare Earth Erbium Additions
چکیده انگلیسی مقاله The effects of rare earth element, erbium (Er) additions on the microstructure and mechanical properties of Al-15Zn-2.5Mg-2.5Cu alloy have been investigated. This new high strength alloy with erbium additions (0.5, 1.0, 1.5 and 2.0 wt%) was synthesized by liquid metallurgy route followed by hot extrusion. Microstructural characterization was performed using scanning electron microscope and electron probe microanalysis. Significant amount of grain refinement was observed with erbium addition in the hot extruded and heat treated alloy. Tensile test was performed to investigate the effect rare earth on mechanical behavior of alloy in as cast and hot extruded condition before and after T6 heat treatment. The combined effect of erbium addition, hot extrusion and heat treatment significantly enhanced the tensile strength of alloy (602 MPa) when compared to the as cast alloy without erbium addition (225 MPa). The strengthening of the alloy was attributed to grain refinement caused by erbium along with hot extrusion and formation of precipitates after T6 heat treatment. Fractograhic investigations revealed that the hot extruded alloy with erbium addition after heat treatment showed uniformly distributed deep dimples exhibiting ductile behavior.   
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نویسندگان مقاله | S. Kord
Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran


| M. H. Siadati
Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran


| M Alipour
2 Department of Materials Science and Engineering, University of Tabriz, Tabriz, Iran


| H Amiri
3 Department of Material Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran.


| Praveennath.G. Koppad
Department of Mechanical Engineering, Nagarjuna College of Engineering and Technology, Bengaluru 562164, India


| A. C. Gowda
Department of Product Design and Manufacturing, Visvesvaraya Technological University, Belgavi, India
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1567-1&slc_lang=en&sid=1
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/454/article-454-937259.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه ریخته گری و انجماد
نوع مقاله منتشر شده Research paper
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