Melting temperature of CoCrFeNiMn high-entropy alloys

被引：22
|
作者：
Gutierrez, M. A. [1 ]
Rodriguez, G. D. [1 ]
Bozzolo, G. [4 ]
Mosca, H. O. [1 ,2 ,3 ]
机构：
[1] UTN Gral Pacheco, GRUCAMM, H Yrigoyen 288,B1617FRP, Gen Pacheco, Buenos Aires, Argentina
[2] Comis Nacl Energia Atom, Gerencia Invest & Aplicac, Av Gral Paz 1499,B1650KNA, San Martin, Buenos Aires, Argentina
[3] Univ Nacl San Martin UNSAM, Comis Nacl Energia Atom CNEA, Inst Sabato, San Martin, Buenos Aires, Argentina
[4] Loyola Univ Maryland, 4501 N Charles St, Baltimore, MD 21210 USA
来源：
COMPUTATIONAL MATERIALS SCIENCE | 2018年 / 148卷
关键词：
High entropy alloys; Alloy design; Melting temperature; BFS method; Atomistic modeling; HIGH-PRESSURE TORSION; MECHANICAL-PROPERTIES; THERMAL-EXPANSION; PHASE-FORMATION; ELASTIC-MODULI; BEHAVIOR; RECRYSTALLIZATION; COEFFICIENT; CRMNFECONI; STABILITY;
D O I：
10.1016/j.commatsci.2018.02.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Atomistic modeling of CoCrFeNiMn (0 < x(Mn) < 25 at.%) high entropy alloys shows that the melting temperature as a function of Mn concentration does not follow the behavior consistent with a homogeneous solid solution, exhibiting a maximum value for 8.7 at.% Mn. Using the concepts of the BFS method for alloys, a description of the phenomenon is provided, showing that sluggish diffusion generates changes in the atomic distribution that lead to this anomalous behavior. This theoretical analysis is meant to provide a template for studying complex compositions and fine effects in high entropy alloys, which would be hard to detect experimentally but that could have an impact on potential applications of these complex materials. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：69 / 75
页数：7
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