کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7973207 | 1514625 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Al-Mg-Fe-Ni based alloy for high strain rate superplastic forming
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel Al-Mg-Fe-Ni based alloy doped by Sc and Zr exhibits high strain rate superplasticity, good mechanical properties and corrosion resistance. The superplastic sheets of the alloy exhibit unrecrystallised grain structure after processing by a simple thermomechanical treatment and subsequent annealing at a temperature up to 0.97Tmelt. Superplastic deformation behaviour for the given alloy was studied by performing tensile tests with constant strain rates in a range of 2 à 10â3 - 1 à 10â1 sâ1 and initial strain rates of 1 à 10â2 and 1 à 10â1 sâ1. The microstructure and the texture evolution of the studied alloy deformed at various constant strain rates were analysed by an SEM-EBSD method. The strain rate sensitivity index m â 0.5 and elongation up to 750% were achieved due to the formation of a fine microstructure with a grain size of 2-4â¯Âµm at superplastic deformation. The developed alloy exhibits superplasticity at the strain rates up to 1 à 10â1 sâ1, the yield strength of 270â¯MPa and the ultimate tensile stress of 385â¯MPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 718, 7 March 2018, Pages 190-197
Journal: Materials Science and Engineering: A - Volume 718, 7 March 2018, Pages 190-197
نویسندگان
A.A. Kishchik, A.V. Mikhaylovskaya, A.D. Kotov, O.V. Rofman, V.K. Portnoy,