کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7991490 1516141 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Super-high hardness of (Fe,Co)-B-Si-Zr/Hf bulk glassy alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Super-high hardness of (Fe,Co)-B-Si-Zr/Hf bulk glassy alloys
چکیده انگلیسی
In this work, the alloying effect of similar atom substitution of Co for Fe on the glass-forming ability as well as mechanical and magnetic properties of Fe71.7-xCoxB16.7Si8.3Zr3.3 and Fe72.5-yCoyB16.7Si8.3Hf2.5 (x, y = 0, 5, 10, 15, 20 and 25) glassy alloys has been studied. Our experiments show that the substitution of Co for Fe causes a decrease in the glass-forming ability. By increasing the content of Co, the critical glass formation size gradually decreases from 2.5 mm to 1 mm. Nano-indentation results indicate that both the Young's modulus and hardness increase with increasing Co content in the bulk glassy alloys. The Fe51.7Co20B16.7Si8.3Zr3.3 bulk glassy alloy exhibits a microhardness, Hv = 13.5 GPa, and a Young's modulus, E = 230 GPa, the microhardness being the highest among all the Fe-based metallic bulk materials reported to date. All of the glassy alloys exhibit good soft magnetic properties with high saturation magnetization (1.12-1.33 T) and low coercive force (0.6-5.2 A/m).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 753, 15 July 2018, Pages 351-355
نویسندگان
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