پديد آورنده :
راعي دهقي، محمد
عنوان :
تاثير فرايند نورد تجمعي بر خواص مكانيك و ريز ساختار ورق آلومينيومي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شناسايي و انتخاب مواد فلزي
محل تحصيل :
اصفهان، دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
نه، 10 ،[II] ص.: مصور، نمودار، جدول
يادداشت :
ص. ع. به فارسي و انگليسي
استاد راهنما :
محمدرضا طرقي نژاد
استاد مشاور :
فرخ الدين اشرفي زاده
توصيفگر ها :
آناليز پراش , بررسي EBSD
تاريخ نمايه سازي :
1/5/86
استاد داور :
محمد محسن مشكسار، عباس نجفي زاده
چكيده فارسي :
فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
Abstract Accumulative roll bonding process was employed to a commercial purity Al alloy Inperforming the accumulative roll bonding process the alloy was rolled with a 50 reduction Then the rolled sheet was cut stacked to be the initial thickness and the stackedpiece was rolled again with the same reduction This procedure was repeated six times sothat an effective strain of 4 8 was accumulated into the alloy The tensile strength of theARB processed commercial purity Al alloy increased with the number of ARB cycles equivalent total strain and after six cycles it reached the maximum of 250 MPa which isabout three times of the annealed sheet On the other hand the elongation dropped abruptlyat the first cycle above which it increase progressively with the number of ARB cycleswith a very smooth slope Also by the first pass of ARB process toughness of the sheetsdecreased to a great extent in comparison with the annealed sheet and then increase withthe number of ARB cycles These changes in mechanical properties may be attributed tograin refinement and strain hardening The influence of the ARB process on the development of deformation texture at the quarterthickness and the surface was considered ARB process leads to the formation of strongorientation densities along the fiber and also to a pronounced dillamore component Itwas found that textures which were formed at the quarter thickness of the ARB processedsheets were the same after 4 and 6 ARB cycles except for the intensities The ARBedsamples after 2 cycles depicts a very weak almost random fiber texture components anda very strong 001 110 rotated cube shear texture component The other two shearcomponents are weak and are negligible after 2 ARB cycles
استاد راهنما :
محمدرضا طرقي نژاد
استاد مشاور :
فرخ الدين اشرفي زاده
استاد داور :
محمد محسن مشكسار، عباس نجفي زاده
