پديد آورنده :
نوحي، زهره سادات
عنوان :
ساخت نانو كامپوزيت آلومينيوم-تيتانيوم-آلومينا توسط نورد تجمعي و ارزيابي خواص مكانيكي و ريز ساختاري
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شناسايي و انتخاب و روش ساخت مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
دوازده،91ص.: مصور،جدول،نمودار(رنگي)
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمدرضا طرقي نژاد، محمدعلي گلعذار
توصيفگر ها :
نورد و آنيل پي در پي ﴿AR﴾
تاريخ نمايه سازي :
21/12/92
استاد داور :
محمدحسين عنايتي، احمد رضاييان
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
93 Mechanical and microstructured evaluating of Aluminum Alumina Titanium by accumulative roll bonding ARB process Zohresadat Noohi z noohy@ma iut ac ir January 8 2014 Department of Materials Engineering Isfahan University of Technology 84156 83111 Isfahan IranDegree M Sc Language FarsiSupervisors Mohammad Reza Toroghinejad Prof E mail toroghi@cc iut ac irMohammad Ali golozar Prof E mail golozar@cc iut ac irAbstractIn this study Anodizing and accumulative roll bonding ARB processes were used formanufacturing aluminum alumina titanium composites including various Al2O3 quantities Before fabricating Al Al2O3 Ti composite the peeling test was utilized to evaluate the effectiveparameters on bond strength of aluminum titanium layers Results obtained indicated thatincreasing the thickness of alumina layer reduce the bond strength of Al Ti layers and byincreasing the reduction the bond strength would increase The microstructural evolution andmechanical properties incuding tensile strength and microhardness of Al 0 22 vol Al2O3 Ti composite during various ARB cycles were reported After four cycles of ARBprocess cracks at Al reinforcement interfaces were appeared In adition reinforcementparticles were not distributed in the matrix properly Tensile strength was reduced after 4cycles but microhardness increased up to 4 cycles of ARB process By increasing theamount of alumina layers on the aluminum tensile strength and microhardness increased To investigate the failure mode fracture surfaces of tensile speciems were studied byscanning electron microscopy SEM It was found that Al 0 22 vol Al2O3 Ti Al 0 43vol Al2O3 Ti and Al 0 65vol Al2O3 Ti composites exhibite a britlle fracture havingelongated dimples Based on the results obtained continual annealing and roll bonding CAR process was used to fabricate aluminum alumina titanium composites After sixcycles of CAR process the Al 0 22 vol Al2O3 Ti composite showed a properdistribution of alumina and titanium particles in the matrix It was seen that by increasingthe number of cycles the microhardness of samples is increased It was found that thetensile strength of Al 0 22 vol Al2 O3 Ti composite is decreased after the first cycle andthen increase up to 192 MPa at the sixth cycle By increasing the quantity of alumina microhardness and tensile strength were increased It was found that Al 0 22 vol Al2O3 Ti and Al 0 43 vol Al2O3 Ti composites exhibite a ductile fracture havingdimples and shear zones Key Words Accumulative roll bonding ARB process continual annealing and roll bonding CAR process composite mechanical properties
استاد راهنما :
محمدرضا طرقي نژاد، محمدعلي گلعذار
استاد داور :
محمدحسين عنايتي، احمد رضاييان
