فایل ورد Effects of Calcium Addition on Mechanical Properties of Mg-6%Zn-0.7%Zr Alloy in As-Cast Condition

لینک دانلود

 فایل ورد Effects of Calcium Addition on Mechanical Properties of Mg-6%Zn-0.7%Zr Alloy in As-Cast Condition دارای 14 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد فایل ورد Effects of Calcium Addition on Mechanical Properties of Mg-6%Zn-0.7%Zr Alloy in As-Cast Condition  کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه  و مراکز دولتی می باشد.

توجه : در صورت  مشاهده  بهم ريختگي احتمالي در متون زير ،دليل ان کپي کردن اين مطالب از داخل فایل ورد مي باشد و در فايل اصلي فایل ورد Effects of Calcium Addition on Mechanical Properties of Mg-6%Zn-0.7%Zr Alloy in As-Cast Condition،به هيچ وجه بهم ريختگي وجود ندارد


بخشی از متن فایل ورد Effects of Calcium Addition on Mechanical Properties of Mg-6%Zn-0.7%Zr Alloy in As-Cast Condition :


سال انتشار : 1395

نام کنفرانس یا همایش : دهمين همايش مشترک و پنجمين کنفرانس بين المللي انجمن مهندسي مواد و متالورژي و انجمن علمي ريخته گري ايران

تعداد صفحات :14

چکیده مقاله:

The effect of different amounts of calcium (0.5, 1, 1.5, 2, and 3 wt. %) on the mechanicalproperties of ZK60 alloy has been investigated. Micrographs of as-cast alloys were observed byoptical and scanning electron microscopy (SEM). Vickers hardness measurement and tensiletesting were performed on the as-cast specimens before and after Ca additions. Experimental results showed that the addition of calcium results in precipitating a new Ca2Mg6Zn3 phase andstructural refinement. Further Ca addition led to the hardness enhancement of the alloy. It can beattributed to the formation of other intermetallic phases such as Mg4Zn7 and Ca2Mg6Zn3. UTS values of the alloy were increased by adding lower calcium contents (up to 1.5 wt.%), butdecreased by further Ca addition (up to 3.0%). It was also found that the ternary eutectic phase predominantly distributes at the grain boundary and acts as the nucleation sites of micro-cracks during tensile testing

توضیحات بیشتر