18 آبان 1403
حسين اسكندري

حسین اسکندری

مرتبه علمی: دانشیار
نشانی: دانشکده مهندسی - گروه مهندسی مکانیک
تحصیلات: دکترای تخصصی / مهندسی مواد
تلفن: 07731222153
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان Friction-stir processing of an AA8026-TiB2-Al2O3 hybrid nanocomposite: Microstructural developments and mechanical properties
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
شناسه DOI
پژوهشگران حسین اسکندری (نفر اول) ، ر طاهری (نفر دوم) ، فرزاد خدابخشی (نفر سوم)

چکیده

Friction stir processing (FSP) has attracted much interest to process ultrafine-grained Al alloys and Al-matrix nanocomposites. In the present study, multiple-pass overlapping FSP was employed to fabricate Al-metal matrix hybrid nanocomposites with addition of micro-sized and nano-sized TiB2 and Al2O3 ceramic particles through the AA8026 aluminum alloy. The microstructural features and mechanical properties of the nanocomposites were investigated. The type and combination of reinforcement nanoparticles were altered and the formation of nanocomposites with different characteristics was elaborated. Variations in the grain structure dependent on the composition and FSP pass number were also examined. Finally, the strengthening mechanisms were elaborated by dislocation models and microstructure-mechanical strength relationship was examined