Link between shear modulus and enthalpy changes of Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high entropy bulk metallic glass

被引：13

作者：

Duan, Y. J. ^{[1
]}

Qiao, J. C. ^{[1
]}

Crespo, D. ^{[2
]}

Goncharova, E. V. ^{[3
]}

Makarov, A. S. ^{[3
]}

Afonin, G. V. ^{[3
]}

Khonik, V. A. ^{[3
]}

机构：

[1] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China

[2] Univ Politecn Cataluna, Dept Fis, Barcelona 08860, Spain

[3] Voronezh State Pedag Univ, Dept Gen Phys, Lenin St 86, Voronezh 394043, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 830卷

关键词：

High entropy metallic glass; Shear modulus; Heat effects; Relaxation; Interstitialcy theory; CRYSTALLIZATION KINETICS; STRUCTURAL RELAXATION; DEFECT CONCENTRATION; HEAT-FLOW; THERMODYNAMICS; SUSCEPTIBILITY; TEMPERATURE; PLASTICITY;

D O I：

10.1016/j.jallcom.2020.154564

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mechanical and thermal properties of materials are intricately linked. Particularly, this fully applies to metallic glasses. In this work, we study shear modulus behavior and heat effects occurring upon heating up of Ti16.7Zr16.7HF16.7Cu16.7Ni16.7Be16.7 high entropy bulk metallic glass up to the full crystallization. In the framework of the Interstitialcy theory, we show that shear modulus relaxation data can be applied to quantitatively predict exo- and endothermal effects related to structural relaxation, glass transition and crystallization of this high entropy metallic glass. This fact suggests that the underlying physical mechanism responsible for this link can be conditioned by the relaxation of the system of structural defects, which by their properties are similar to dumbbell interstitials in metals. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：5

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