پديد آورنده :
فرقداني، مهديه
عنوان :
ساخت درجاي نانو كامپوزيت در سيستم سه تايي Mg-Cu-O بر سطح آلياژ منيزيم AZ91C با استفاده از فرايند اصطكاكي اغتشاشي و بررسي خواص تريبولوژيكي آن
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
سيزده، 70ص.: مصور، جدول، نمودار
استاد راهنما :
فتح اله كريم زاده، محمدحسين عنايتي
توصيفگر ها :
نانو كامپوزيت سطحي , تركيبات بين فلزي , سيستم Mg- Cu
تاريخ نمايه سازي :
1394/06/08
استاد داور :
محمود منيرواقفي، مسعود عطاپور
تاريخ ورود اطلاعات :
1396/10/04
چكيده فارسي :
به فارسي و انگليسي
چكيده انگليسي :
Development of surface nano composite based on Mg Cu O ternary system on AZ91C alloy by friction stir processing and study of its tribological behavior Mahdie Farghadani m farghadani@ma iut ac ir Date of submission 2015 5 25 Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisors F Karimzadeh Karimzadeh f@cc iut ac irM H Enayati Ena87@cc iut ac ir AbstractIn this study surface nanocomposite based on Mg Cu intermetallic compounds wasfabricated on the AZ91C alloy by friction stir processing FSP Either Cu or CuO powderwas placed in grooves produced on AZ91C surface In order to fabricate composite with nodefects improve Cu and Mg reaction achive uniform distribution of reinforcement thesamples were processed with 6 passes at a tool rotational speed of 1000 rpm and transversespeed of 40 mm min XRD analysis was used to investigate the formation of theintermetallics compounds The results revealed that Mg2Cu compound was formed in caseof FSP of AZ91C Cu composite Reaction of copper oxide with Mg in case ofAZ91C CuO composite led to the formation of MgO and MgCu2 reinforcement particles inaddition to the Mg2Cu phase FSPed AZ91C CuO samples was T6 heat treated Hardnessof heat treated AZ91C CuO sample was about 165 Hv wich is much higher than that forbase metal 62 Hv FSPed AZ91C CuO and AZ91C Cu composites 128 Hv and 114Hvrespectively Comparison of tensile and wear results proved that AZ91C CuO compositehad the best mechanical and tribological behavior After fabrication of AZ91C CuOcomposite the UTS Ultimate tensile strength increased from 112 4 Mpa for as receivedAZ91C to about 330 Mpa for FSPed AZ91C CuO sample Wear surface observationrevealed the occurrence of abrasion and delamination mechanism The depth and width ofworn grooves were smaller in case of AZ91C CuO sample Because of the microcracksformation in T6 heat treated AZ91C CuO samples thus wear rate was much lower in thissample delamination and wear rate increased in comparison to un heat treated samples Keywords Surface nanocomposite Magnesium alloy Friction stir processing Intermetalliccompounds Mg Cu system
استاد راهنما :
فتح اله كريم زاده، محمدحسين عنايتي
استاد داور :
محمود منيرواقفي، مسعود عطاپور
