کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7974907 | 1514669 | 2016 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NbTaV-(Ti,W) refractory high-entropy alloys: Experiments and modeling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
This study reports the design and development of ductile and strong refractory single-phase high-entropy alloys (HEAs) for high temperature applications, based on NbTaV with addition of Ti and W. Assisted by CALPHAD modeling, a single body-centered cubic solid solution phase was experimentally confirmed in the as-cast ingots using X-ray diffraction and scanning electron microscopy. The observed elemental segregation in each alloy qualitatively agrees with CALPHAD prediction. The Vickers microhardnesses (and yield strengths) of the alloys are about 3 (and 3.5-4.4) times that those estimated from the rule of mixture. While NbTaTiVW shows an impressive yield strength of 1420Â MPa with fracture strain of 20%, NbTaTiV exhibits exceptional compressive ductility at room temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 674, 30 September 2016, Pages 203-211
Journal: Materials Science and Engineering: A - Volume 674, 30 September 2016, Pages 203-211
نویسندگان
H.W. Yao, J.W. Qiao, M.C. Gao, J.A. Hawk, S.G. Ma, H.F. Zhou, Y. Zhang,