A new thermodynamic parameter to predict formation of solid solution or intermetallic phases in high entropy alloys

被引：184

作者：

Senkov, O. N. ^{[1
]}

Miracle, D. B. ^{[1
]}

机构：

[1] Air Force Res Lab, Mat & Mfg Directiorate, Wright Patterson AFB, OH 45433 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 658卷

关键词：

High entropy alloy; Phase selection; Equilibrium phases; MICROSTRUCTURE; STABILITY; ALUMINUM; ELEMENTS;

D O I：

10.1016/j.jallcom.2015.10.279

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：

A simple thermodynamic criterion is proposed to predict the presence or absence of equilibrium intermetallic phases in a high entropy alloy at a given temperature T. The criterion was verified using 45 currently available HEAs, for which equilibrium phases and respective annealing temperature are reported. The present model shows good correlation with experiment and gives an improved ability to predict formation of solid solution and intermetallic phases compared to earlier models. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：603 / 607

页数：5

共 31 条

[1] 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

[2] Phase selection rules for cast high entropy alloys: an overview [J].

Guo, S. .

MATERIALS SCIENCE AND TECHNOLOGY, 2015, 31 (10) :1223-1230

[3]

Guo S., 2013, Nat. Mag., V35, P85

[4] Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys [J].

Guo, Sheng ;

Ng, Chun ;

Lu, Jian ;

Liu, C. T. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (10)

[5] 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

[6] Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase [J].

Guo, Sheng ;

Liu, C. T. .

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL, 2011, 21 (06) :433-446

[7]

Hillert M., 2007, Phase Equilibria, Phase Diagrams and Phase Transformations: their Thermodynamic Basis, Vsecond

[8]

Hume-Rothery W, 1969, The structure of metals and alloys, Vfifth

[9] Annealing effects on the microstructure and properties of bulk high-entropy CoCrFeNiTi0.5 alloy casting ingot [J].

Jiang, Li ;

Lu, Yiping ;

Dong, Yong ;

Wang, Tongmin ;

Cao, Zhiqiang ;

Li, Tingju .

INTERMETALLICS, 2014, 44 :37-43

[10] Microstructure and mechanical property of as-cast, -homogenized, and -deformed AlxCoCrFeNi (0 ≤ x ≤ 2) high-entropy alloys [J].

Kao, Yih-Farn ;

Chen, Ting-Jie ;

Chen, Swe-Kai ;

Yeh, Jien-Wei .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 488 (01) :57-64

← 1 2 3 4 →