کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7989496 | 1515942 | 2018 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Refractory high entropy alloys: CrMoNbTiVWZr and AlxCryNbMoTiVzZry(xâ¯=â¯0,0.6;yâ¯=â¯0.3,zâ¯=â¯0,0.6)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Four potential High Entropy Alloys, CrMoNbTiVWZr, Cr0.3NbMoTiZr0.3, Cr0.3NbMoTiV0.6Zr0.3 and Al0.6Cr0.3NbMoTiV0.6Zr0.3 have been designed using the indications provided by atomic radius and electronegativity mismatch parameters. Alloys were synthesized by arc melting and characterized in the as-cast state and after heat-treatment by X-ray Diffraction and Scanning Electron Microscope experiments. In the as-cast state all alloys have dendritic microstructure, although with varied shapes of dendrites, accompanied by a cubic Laves phase and an hcp phase in the region between the dendrites. After annealing at 1350â¯Â°C for 3â¯h it is shown that only non-equimolar compositions are constituted of bcc high entropy phase complying with the requirements for defining them as HEAs, with a small amount of secondary phases which help in providing high hardness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 76, November 2018, Pages 128-133
Journal: International Journal of Refractory Metals and Hard Materials - Volume 76, November 2018, Pages 128-133
نویسندگان
M.G. Poletti, C.M. McCaughey, G. Fiore, R. Goodall, L. Battezzati,