کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1573540 1514684 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure, mechanical properties and creep of magnesium alloy Elektron21 reinforced with AlN nanoparticles by ultrasound-assisted stirring
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Microstructure, mechanical properties and creep of magnesium alloy Elektron21 reinforced with AlN nanoparticles by ultrasound-assisted stirring
چکیده انگلیسی
Ceramic AlN nanoparticles were added to a melt of magnesium alloy Elektron21 assisted by mechanical stirring and sonication for deagglomeration. The produced nanocomposite was investigated to determine its metallography, hardness, physical and mechanical properties, and compression creep resistance. Creep tests at a constant temperature of 240 °C and constant stresses of between 70 and 200 MPa revealed an improvement in creep strength after the addition of 1 wt% of AlN nanoparticles. Minimum creep rates were determined and stress exponents were calculated. In order to determine the rate-controlling deformation mechanisms, the concept of a threshold stress for particle strengthened alloys was applied. True stress exponents were calculated for the alloy and for the composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 659, 6 April 2016, Pages 84-92
نویسندگان
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