Effect of alloying on the thermal-elastic properties of 3d high-entropy alloys

被引：42

作者：

Ge, Huijuan ^{[1
]}

Song, Hongquan ^{[1
]}

Shen, Jiang ^{[1
]}

Tian, Fuyang ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Appl Phys, Beijing 100083, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2018年 / 210卷

基金：

中国国家自然科学基金;

关键词：

High-entropy alloys; ab initio calculations; Curie temperature; Elastic moduli; Thermal-elastic properties; COHERENT-POTENTIAL APPROXIMATION; MECHANICAL-PROPERTIES; GRAIN-GROWTH; MODULI; DEPENDENCE; MODEL;

D O I：

10.1016/j.matchemphys.2017.10.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the quasi-harmonic approximation in combination with ab initio calculations, we study the temperature dependent elasticity of single-phase face centered cubic (fcc) Co-Cr-Fe-Mn-Ni multi-principle element alloys. Results suggest that the addition of an equimolar alloying element increases the fcc stability due to the increasing valence electron concentration of alloys. The ductility of paramagnetic alloys becomes superior with the increase of temperature. For the Co-Cr-Fe-Mn-Ni high-entropy alloy, the Young's moduli along different crystal directions are consistent with experiments. The difference between ab initio predicted temperature dependent elastic moduli and experiments is discussed. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：320 / 326

页数：7

共 41 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] Ab initio study of AlxMoNbTiV high-entropy alloys [J].

Cao, Peiyu ;

Ni, Xiaodong ;

Tian, Fuyang ;

Varga, Lajos K. ;

Vitos, Levente .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2015, 27 (07)

[3] Experimental and theoretical study of Ti20Zr20Hf20Nb20X20 (X = V or Cr) refractory high-entropy alloys [J].

Fazakas, E. ;

Zadorozhnyy, V. ;

Varga, L. K. ;

Inoue, A. ;

Louzguine-Luzgin, D. V. ;

Tian, Fuyang ;

Vitos, L. .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2014, 47 :131-138

[4]

Goldschmidt VM, 1928, Z PHYS CHEM-STOCH VE, V133, P397

[5] COHERENT-POTENTIAL APPROXIMATION FOR A "NONOVERLAPPING-MUFFIN-TIN-POTENTIAL MODEL OF RANDOM SUBSTITUTIONAL ALLOYS [J].

GYORFFY, BL .

PHYSICAL REVIEW B, 1972, 5 (06) :2382-&

[6] Polycrystalline elastic moduli of a high-entropy alloy at cryogenic temperatures [J].

Haglund, A. ;

Koehler, M. ;

Catoor, D. ;

George, E. P. ;

Keppens, V. .

INTERMETALLICS, 2015, 58 :62-64

[7] THE ELASTIC BEHAVIOUR OF A CRYSTALLINE AGGREGATE [J].

HILL, R .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION A, 1952, 65 (389) :349-355

[8] A study of lattice elasticity from low entropy metals to medium and high entropy alloys [J].

Huang, E-Wen ;

Yu, Dunji ;

Yeh, Jien-Wei ;

Lee, Chi ;

An, Ke ;

Tu, Shan-Yi .

SCRIPTA MATERIALIA, 2015, 101 :32-35

[9] Temperature dependent stacking fault energy of FeCrCoNiMn high entropy alloy [J].

Huang, Shuo ;

Li, Wei ;

Lu, Song ;

Tian, Fuyang ;

Shen, Jiang ;

Holmstrom, Erik ;

Vitos, Levente .

SCRIPTA MATERIALIA, 2015, 108 :44-47

[10] SELF-CONSISTENT EQUATIONS INCLUDING EXCHANGE AND CORRELATION EFFECTS [J].

KOHN, W ;

SHAM, LJ .

PHYSICAL REVIEW, 1965, 140 (4A) :1133-&

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