پديد آورنده :
ميرشاهي، فرشيد
عنوان :
توليد و ارزيابي كامپوزيت منيزيم/سيليسيد منيزيم به روش غير واكنش گر در جا
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان،دانشكده مواد
صفحه شمار :
ده،86ص.:مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
محمود مرآتيان
استاد مشاور :
مسعود پنجه پور
توصيفگر ها :
كامپوزيت Mg/Mg2Si , كامپوزيت غير واكنش گر در جا , انجماد جهت دار , ريز ساختار , خواص مكانيكي , سرعت سرد شدن , بهسازي
تاريخ نمايه سازي :
89/1/28
استاد داور :
رحمت ا.. عمادي،مهدي احمديان
تاريخ ورود اطلاعات :
1396/09/28
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Fabrication and characterization of Mg Mg2Si composite by non reactive in situ process Farshid Mirshahi f mirshahi@ma iut ac ir Date of Submission 2010 02 24 Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Mahmoud Meratian meratian@cc iut ac irAbstractIn recent years ceramic particles reinforced magnesium based composites have been considered in manyresearches because of their high specific strength and low density Non reactive in situ process is one of thenewly emerged method in which of recycling of its scraps are advantageous In the present work theMg Mg2Si composite was synthesize using non reactive in situ method Thermal and chemical methodswere utilized for modification of primary Mg2Si particles A directional solidification system was fabricatedfor studying of solidification process and effect of cooling rate on reinforcement structure The resultsshowed that the produced composite was containing primary Mg2Si particles Mg Mg2Si eutectic structureand Mg matrix Mechanical properties were reduced because of coarse and denderitic structure of primaryMg2Si particles With increasing cooling rates the Mg2Si precipitated polygonally while in lower coolingrates it solidified dendritically mechanical properties was increased in high cooling rates On the other hand with addition of 0 5 wt bismuth to the melt the primary of Mg2Si particles wereconvert to polygonal structures and the average size of their particle were reduced Tensile tests in threedifferent temperature 24 C 150 C and 220 C applied to pure magnesium non modified composite andmodified composite Tensile properties of modified composite in 24 C and 150 C were increased incomparison with non modified composite Unexpected reduction of tensile strength was observed at 220 C Keywords Mg Mg2Si composite Non reactive in situ composite Directional solidification Coolingrate Structure Mechanical properties Modification
استاد راهنما :
محمود مرآتيان
استاد مشاور :
مسعود پنجه پور
استاد داور :
رحمت ا.. عمادي،مهدي احمديان
