The fcc solid solution stability in the Co-Cr-Fe-Mn-Ni multi-component system

被引：192

作者：

Bracq, Guillaume ^{[1
]}

Laurent-Brocq, Mathilde ^{[1
]}

Perriere, Loic ^{[1
]}

Pires, Remy ^{[1
]}

Joubert, Jean-Marc ^{[1
]}

Guillot, Ivan ^{[1
]}

机构：

[1] Univ Paris Est, CNRS, ICMPE UMR 7182, UPEC, F-94320 Thiais, France

来源：

ACTA MATERIALIA | 2017年 / 128卷

关键词：

Multi-component alloys; High entropy alloys; Solid solution; Calphad; Thermodynamic stability; HIGH-ENTROPY ALLOYS; PHASE-STABILITY; SINGLE-PHASE; DESIGN;

D O I：

10.1016/j.actamat.2017.02.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase stability of the fcc solid solution in the Co-Cr-Fe-Mn-Ni system was theoretically and experimentally investigated. Using the Calphad approach and a new database (TCHEA1) devoted to high entropy alloys (HEA), the stable phases of 10 626 compositions could be calculated, depending on the temperature. 11 alloys were also processed and characterized. The comparison between calculations and experimental results indicates that the fcc solid solution is accurately described by the TCHEA1 database but, the a phase is more stable than the calculation predictions. It was shown that the fcc phase is stable over a wide range of compositions, which was completely described. Now it is possible to choose a priori a composition which will form a solid solution within the Co-Cr-Fe-Mn-Ni system. Finally, it was proven that Cr and Mn destabilize the fcc solid solution, unlike Ni and Co. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：327 / 336

页数：10

共 27 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]

Carvajal J.R., 1990, ABSTR SATELL MEET PO, P127

[3] Design of a twinning-induced plasticity high entropy alloy [J].

Deng, Y. ;

Tasan, C. C. ;

Pradeep, K. G. ;

Springer, H. ;

Kostka, A. ;

Raabe, D. .

ACTA MATERIALIA, 2015, 94 :124-133

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

Guo, S. .

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

[5] 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)

[6] From high entropy alloys to diluted multi-component alloys: Range of existence of a solid-solution [J].

Laurent-Brocq, Mathilde ;

Perriere, Loic ;

Pires, Remy ;

Champion, Yannick .

MATERIALS & DESIGN, 2016, 103 :84-89

[7]

Lukas H. L., 2007, COMPUTATIONAL THERMO, V131

[8] Phase stability of non-equiatomic CoCrFeMnNi high entropy alloys [J].

Ma, Duancheng ;

Yao, Mengji ;

Pradeep, K. G. ;

Tasan, Cemal C. ;

Springer, Hauke ;

Raabe, Dierk .

ACTA MATERIALIA, 2015, 98 :288-296

[9]

Nishiyama Zenji, 2012, Martensitic Transformation

[10]

Nishizawa T., 1984, Bull. Alloy Phase Diagrams, V5, P250, DOI [10.1007/BF02868548, DOI 10.1007/BF02868548]

← 1 2 3 →