کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456659 1514666 2016 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of heat treatment and deformation temperature on the mechanical properties of ECAP processed ZK60 magnesium alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of heat treatment and deformation temperature on the mechanical properties of ECAP processed ZK60 magnesium alloy
چکیده انگلیسی
Equal channel angular pressing(ECAP) as a common severe plastic deformation (SPD) procedure has been extensively explored in Mg alloys to improve their mechanical properties. But due to the hot processing temperature and texture softening, the strength of ECAP processed Mg alloys was found to be relatively low. In this work, high strength and good ductility were achieved in ZK60 magnesium alloy by a combination of grain refinement strengthening and precipitate hardening through the use of heat treatment and equal channel angular pressing (ECAP). Due to the pre-solution heat treatment, fine metastable phase particles (MgZn2) precipitated during the severe plastic deformation, which improved the work hardening of the alloy and increased the strength and ductility simultaneously. When the ECAP processing temperature was reduced gradually, the grains were further refined to ~500 nm and more MgZn2 particles precipitated hierarchically. Therefore, there was a notable increase in the yield strength and ultimate tensile strength, while the ductility was almost retained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 677, 20 November 2016, Pages 125-132
نویسندگان
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