پديد آورنده :
جماعتي، روح الله
عنوان :
ريز ساختار و خواص مكانيكي كامپوزيت آلومينيوم / آلومينا توليد شده توسط فرايندهاي نورد
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شناسايي و انتخاب و روش ساخت مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
پانزده،121ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمدرضا طرقي نژاد، عباس نجفي زاده
توصيفگر ها :
كامپوزيت هاي زمينه فلزي , نورد اتصالي سرد ﴿CRB﴾ , آنيل و نورد اتصالي مكرر ﴿CAR﴾ , نورد تجمعي ﴿ARB﴾ , استحكام پيوند , ريز ساختار , بررسي سطوح شكست
تاريخ نمايه سازي :
24/7/89
استاد داور :
محمود منير واقفي، حسين ادريس
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
122 Microstructure and mechanical properties of aluminum alumina composite produced by rolling processes Roohollah Jamaati r jamaatikenari@ma iut ac ir April 07 2010 Department of Materials Engineering Isfahan University of Technology 84156 83111 Isfahan Iran Degree M Sc Language Farsi Dr Mohammad Reza Toroghinejad Assoc Prof Supervisor E mail toroghi@cc iut ac ir Dr Abbas Najafizadeh Prof Supervisor E mail a najafi@cc iut ac ir Abstract In this study rolling processes for manufacturing of aluminum alumina composite were used for first time Indeed three major methods for producing the composites were used which each of methods had unique properties These methods are consist of a cold roll bonding CRB b continual annealing and roll bonding CAR and c accumulative roll bonding ARB Also two various techniques for adding the reinforcement to matrix in each of methods were used These techniques are consist of a using the alumina particles and b using the anodizing process Therefore it can be expressed that six methods for producing the aluminum alumina composites were used Bond strength between strips and effective parameters on the bond strength were evaluated by peeling test Microstructural observation during the various methods was investigated by optical microscopy OM and scanning electron microscopy SEM In order to investigation of mechanical properties of the produced composites tensile and hardness tests were used Evaluating the fractured surfaces of samples were carried out by scanning electron microscopy The results revealed that when the cycles number of process was increased porosities were decreased and the distribution of alumina particles in the aluminum matrix was improved Also tensile strength of the produced composite by the accumulative roll bonding method improves by 4 times compared to that of the annealed aluminum used as the original raw material The tensile strength of the composites were increased by increasing the number of cycles while the changes in elongation values were various Furthermore the results demonstrated that mechanical properties variations are in agreement with their microstructural observations Finally the observations revealed that the failure mode in ARB processed composites is the shear ductile rupture type Keywords Metal matrix composite MMC Aluminum alloys Cold roll bonding CRB Continual annealing and roll bonding CAR Accumulative roll bonding ARB Bond strength Microstructure Mechanical properties Fractography
استاد راهنما :
محمدرضا طرقي نژاد، عباس نجفي زاده
استاد داور :
محمود منير واقفي، حسين ادريس
