پديد آورنده :
طلوعي، احسان
عنوان :
ارزيابي خواص كامپوزيت آلومينيوم باذرات تقويت كننده برنج ساخته شده به روش نورد پيوند تجمعي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شناسايي انتخاب و روش ساخت مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
پنج، 68ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
محمدرضا طرقي نژاد، فخرالدين اشرفي زاده
توصيفگر ها :
كامپوزيت آلومينيوم , نورد سرد پيوندي , ورق آلومينيوم
تاريخ نمايه سازي :
3/3/94
استاد داور :
احمد رضاييان، ابوذر طاهري زاده
تاريخ ورود اطلاعات :
1396/10/02
چكيده انگليسي :
69Mechanical properties evaluation of aluminium composite withbrass particle as reinforcement produced by accumulative roll bonding ARB Ehsan Tolouei e tolouei@ma iut ac ir January 6 2015 Department of Materials Engineering Isfahan university of Technology Isfahan 84156 83111 IranDegree M Sc language FarsiSupervisors Mohammad Reza Toroghinejad Prof E mail Toroghi@cc iut ac irFakhredin Ashrafizade Prof E mail Ashrafif@cc iut ac irAbstractIn this study aluminum composite including brass particles was produced by accumulativeroll bonding Brass mesh was used as reinforcement between the aluminum sheets First peeling test was performed to study the effect of various parameters on the bond strengthof two aluminum layers in presence of brass mesh after cold roll bonding Then fracturedsections were examined by scanning electron and optical microscopy The results showedthat bonding was improved by increasing the reduction of thickness and initial thicknessof aluminum layers Also pre rolling and post rolling annealing increased the bondstrength After roll bonding to 50 reduction in each cycle samples were cut in half stacked and again roll bonded to 50 reduction in the next cycle 3 and 6 weight percentof brass in odd cycles from 1 to 9 was provided In order to study the effect of brass meshon the composites properties aluminum sheet samples were roll bonded in the absent ofbrass mesh in similar cycles and rolling conditions Microstructural examinations byoptical and scanning electron microscopes showed that even at high cycles distribution ofbrass particles in the matrix was not uniform and areas without brass particles wasobserved Discontinuity at interfaces between matrix and particles and micro cracks atinterfaces were also observed Examination of mechanical properties was performed bystrength hardness and micro hardness tests Increasing tensile strengths of 60 to 170 MPaafter annealing and after 9 cycles were observed respectively But there was not tangibledifference in the strength between 3 and 6 composites and non composite samples Hardness was increased from 22 to 55 Vickers after 9 cycles in 6 composite Fracturedsurfaces were investigated by scanning electron microscopy ductile fracture was evidentby dimples on the surfaces Crystallographic texture was studied in 3 composite x raydiffraction Appearance of Copper and Dillamore components as major components wereobserved in all cycles and finally showed 17 R intensities after 9 cycles Key words Cold roll bonding Accumulative roll bonding Fractured surfaces Mechanicalproperties Texture components
استاد راهنما :
محمدرضا طرقي نژاد، فخرالدين اشرفي زاده
استاد داور :
احمد رضاييان، ابوذر طاهري زاده
