Spinodal decomposition and the pseudo-binary decomposition in high-entropy alloys

被引：36

作者：

Luan, Hengwei ^{[1
,2
,3
]}

Huang, Liufei ^{[4
]}

Kang, Jingyi ^{[1
]}

Luo, Bosang ^{[1
]}

Yang, Xinglong ^{[1
]}

Li, Jinfeng ^{[4
]}

Han, Zhidong ^{[1
]}

Si, Jiajia ^{[5
]}

Shao, Yang ^{[1
]}

Lu, Jian ^{[2
,3
]}

Yao, Ke-Fu ^{[1
]}

机构：

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

[2] City Univ Hong Kong, Dept Mech Engn, Tat Chee Ave, Hong Kong 999077, Peoples R China

[3] City Univ Hong Kong, Hong Kong Branch, Natl Precious Met Mat Engn Res Ctr, Tat Chee Ave, Hong Kong 999077, Peoples R China

[4] China Acad Engn Phys, Inst Mat, Mianyang 621908, Peoples R China

[5] China Univ Petr East China, Sch Mat Sci & Engn, Qingdao 266580, Peoples R China

来源：

ACTA MATERIALIA | 2023年 / 248卷

基金：

中国国家自然科学基金;

关键词：

High -entropy alloys; Spinodal decomposition; Phase stability; Gibbs phase rule; Pseudo -binary decomposition; MULTICOMPONENT SOLID-SOLUTIONS; PHASE HIGH-ENTROPY; MECHANICAL-PROPERTIES; NONUNIFORM SYSTEM; FREE-ENERGY; STABILITY; MICROSTRUCTURE; SEPARATION; SIMULATION; ENTHALPY;

D O I：

10.1016/j.actamat.2023.118775

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-entropy alloys (HEAs) have many attractive properties, while the thermodynamic mechanism and general behavior of the spinodal decomposition in HEAs remain unknown. In this work, we conduct an experimentally consistent calculation of the spinodal decomposition of HEAs. Against the "high mixing entropy" theory, we show that increasing the number of elements can increase the possibility of spinodal decomposition, and the effects of the temperature, entropy and enthalpy are clarified. The high entropy effect on the widely observed pseudo-binary decomposition is proposed. These results provide a necessary paradigm to understand and further harness the spinodal decomposition in HEAs.

引用

页数：8

共 77 条

[1] Phase separation and glass-forming abilities of ternary alloys [J].

Abe, T. ;

Shimono, M. ;

Hashimoto, K. ;

Hono, K. ;

Onodera, H. .

SCRIPTA MATERIALIA, 2006, 55 (05) :421-424

[2] High-Entropy Alloys as a Discovery Platform for Electrocatalysis [J].

Batchelor, Thomas A. A. ;

Pedersen, Jack K. ;

Winther, Simon H. ;

Castelli, Ivano E. ;

Jacobsen, Karsten W. ;

Rossmeisl, Jan .

JOULE, 2019, 3 (03) :834-845

[3] A study of phase separation in ternary alloys [J].

Bhattacharyya, S ;

Abinandanan, TA .

BULLETIN OF MATERIALS SCIENCE, 2003, 26 (01) :193-197

[4] A Combinatorial Approach for Assessing the Magnetic Properties of High Entropy Alloys: Role of Cr in AlCoxCr1-xFeNi [J].

Borkar, Tushar ;

Chaudhary, Varun ;

Gwalani, Bharat ;

Choudhuri, Deep ;

Mikler, Calvin V. ;

Soni, Vishal ;

Alam, Talukder ;

Ramanujan, Raju V. ;

Banerjee, Rajarshi .

ADVANCED ENGINEERING MATERIALS, 2017, 19 (08)

[5] FREE ENERGY OF A NONUNIFORM SYSTEM .2. THERMODYNAMIC BASIS [J].

CAHN, JW .

JOURNAL OF CHEMICAL PHYSICS, 1959, 30 (05) :1121-1124

[6] FREE ENERGY OF A NONUNIFORM SYSTEM .1. INTERFACIAL FREE ENERGY [J].

CAHN, JW ;

HILLIARD, JE .

JOURNAL OF CHEMICAL PHYSICS, 1958, 28 (02) :258-267

[7] COMPUTER-SIMULATION OF SPINODAL DECOMPOSITION IN TERNARY-SYSTEMS [J].

CHEN, LQ .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (10) :3503-3513

[8] Microstructural change and phase transformation in each individual layer of a nano-multilayered AlCrTiSiN high-entropy alloy nitride coating upon annealing [J].

Chen, Wanglin ;

Yan, An ;

Meng, Xianna ;

Wu, Dongqing ;

Yao, Dencan ;

Zhang, Daoda .

APPLIED SURFACE SCIENCE, 2018, 462 :1017-1028

[9] Phase-field approach to simulate BCC-B2 phase separation in the AlnCrFe2Ni2 medium-entropy alloy [J].

Coutinho, Yuri Amorim ;

Kunwar, Anil ;

Moelans, Nele .

JOURNAL OF MATERIALS SCIENCE, 2022, 57 (23) :10600-10612

[10] CLUSTERING AND ORDERING IN SOLID-SOLUTIONS [J].

DEFONTAINE, D .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1975, 8 (APR1) :81-86

← 1 2 3 4 5 6 7 8 →