Thermal Stability of Fe-Based BMGs Investigated by High-Energy X-ray Scattering

被引：0
作者：
Girman, Vladimir [1 ,3 ]
Kolesar, Vladimir [2 ]
Lisnichuk, Maksym [1 ,3 ]
Yudina, Daria [1 ]
Baldovsky, Andrej [1 ]
Sovak, Pavol [1 ]
Bednarcik, Jozef [1 ,4 ]
机构：
[1] PJ Safarik Univ Kosice, Inst Phys, Fac Sci, Pk Angelinum 9, Kosice 04154, Slovakia
[2] Univ Ostrava, Dept Phys, 30 dubna 22, Ostrava 70103, Czech Republic
[3] Slovak Acad Sci, Inst Mat Res, Watsonova 47, Kosice 04001, Slovakia
[4] Slovak Acad Sci, Inst Expt Phys, Watsonova 47, Kosice 04001, Slovakia
来源：
APPLIED PHYSICS OF CONDENSED MATTER, APCOM 2022 | 2023年 / 2778卷
关键词：
MAGNETIC-PROPERTIES; METALLIC GLASSES; EXPANSION; CO; BEHAVIOR; NB; TI;
D O I：
10.1063/5.0136300
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The present work focuses on the thermal stability study of Fe-based bulk metallic glasses (BMG) during thermal cycling in the range from room temperature up to 730 degrees C. Structural changes were investigated by means of in-situ high-energy X-ray scattering (HEXS) of synchrotron radiation. Special emphasis was placed on investigation of thermal expansion behavior of selected Fe-based BMGs during cycling heating and cooling. Observed structural changes were related to thermally induced structural relaxation of amorphous structures that was evaluated as irreversibility observed between heating and cooling expansion curves. X-ray data were analyzed in reciprocal space by tracing position of the principal diffuse peak. The study of the local atomic structure was further complemented by analysis in real space by means of pair distribution function. Reciprocal and real space analyses differ in the length scale they are sensitive to, and thus offer unique approach to study thermal expansion behavior of amorphous alloys on short-range (1.8 - 3.3 angstrom) as well as medium-range (6 - 15 angstrom) order.
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页数：7
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