Crystallization kinetics of TiZrHfCuNiBe high entropy bulk metallic glass

被引：56

作者：

Gong, P. ^{[1
]}

Yao, K. F. ^{[1
]}

Ding, H. Y. ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 156卷

基金：

中国国家自然科学基金;

关键词：

Amorphous materials; Metals and alloys; High entropy alloys; Bulk metallic glasses; Thermal analysis; Crystallization kinetics; ALLOYS; CO;

D O I：

10.1016/j.matlet.2015.05.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The isochronal and isothermal DSC annealing techniques have been employed to investigate the crystallization behavior of a newly developed Ti16.7Zr16.7Hf16.7Cu16.7Ni16.7Be16.7 high entropy bulk metallic glass. In non-isothermal condition, the activation energies for glass transition, onset and the first crystallization process were determined by Kissinger equation, to be 331.8 +/- 8.0, 215.3 +/- 4.5 and 245.5 +/- 6.3 kJ/mol, respectively. The isothermal kinetics was modeled by the Johnson-Mehl-Avrami (JMA) equation. During the crystallization process, the isothermal activation energy calculated by the Arrhenius equation changes little with an average value of 259.9 kJ/mol. The Avrami exponent is in the range from 1.81 to 2.04, indicating that the crystallization process is mainly dominated by growth of particles with a decreasing nucleation rate. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：146 / 149

页数：4

共 23 条

[1] DECOUPLED BULK AND SURFACE CRYSTALLIZATION IN PD85SI15 GLASSY METALLIC ALLOYS - DESCRIPTION OF ISOTHERMAL CRYSTALLIZATION BY A LOCAL VALUE OF THE AVRAMI EXPONENT [J].

CALKA, A ;

RADLINSKI, AP .

JOURNAL OF MATERIALS RESEARCH, 1988, 3 (01) :59-66

[2] Microstructural development in equiatomic multicomponent alloys [J].

Cantor, B ;

Chang, ITH ;

Knight, P ;

Vincent, AJB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 375 :213-218

[3] CORRELATION BETWEEN THERMAL-STABILITY AND ACTIVATION-ENERGY OF CRYSTALLIZATION IN METALLIC GLASSES [J].

CHEN, HS .

APPLIED PHYSICS LETTERS, 1976, 29 (01) :12-14

[4] Non-isothermal crystallization kinetics of Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous alloy [J].

Cheng, Sirui ;

Wang, Chunju ;

Ma, Mingzhen ;

Shan, Debin ;

Guo, Bin .

THERMOCHIMICA ACTA, 2014, 587 :11-17

[5] A senary TiZrHfCuNiBe high entropy bulk metallic glass with large glass-forming ability [J].

Ding, H. Y. ;

Shao, Y. ;

Gong, P. ;

Li, J. F. ;

Yao, K. F. .

MATERIALS LETTERS, 2014, 125 :151-153

[6] High entropy Ti20Zr20Cu20Ni20Be20 bulk metallic glass [J].

Ding, H. Y. ;

Yao, K. F. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2013, 364 :9-12

[7] CRYSTALLIZATION KINETICS OF FE80B20 GLASS [J].

GREER, AL .

ACTA METALLURGICA, 1982, 30 (01) :171-192

[8] White organic light-emitting diodes based on tandem structures [J].

Guo, FW ;

Ma, DG .

APPLIED PHYSICS LETTERS, 2005, 87 (17) :1-3

[9] More than entropy in high-entropy alloys: Forming solid solutions or amorphous phase [J].

Guo, Sheng ;

Hu, Qiang ;

Ng, Chun ;

Liu, C. T. .

INTERMETALLICS, 2013, 41 :96-103

[10] Crystallization kinetics and thermal stability of the Zr60Al7.5Cu17.5Ni10Si4B1 amorphous alloy studied by isothermal differential scanning calorimetry and transmission electron microscopy [J].

Jang, J. S. C. ;

Wang, I. H. ;

Chang, L. J. ;

Chen, G. J. ;

Hung, T. H. ;

Huang, J. C. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 449 :511-516

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