Temperature dependent stacking fault energy of FeCrCoNiMn high entropy alloy

被引：460
作者：
Huang, Shuo [1 ]
Li, Wei [1 ]
Lu, Song [1 ]
Tian, Fuyang [2 ]
Shen, Jiang [2 ]
Holmstrom, Erik [3 ]
Vitos, Levente [1 ,4 ,5 ]
机构：
[1] Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
[2] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[3] Sandvik Coromant R&D, S-12680 Stockholm, Sweden
[4] Uppsala Univ, Div Mat Theory, Dept Phys & Astron, SE-75120 Uppsala, Sweden
[5] Wigner Res Ctr Phys, Inst Solid State Phys & Opt, H-1525 Budapest, Hungary
来源：
SCRIPTA MATERIALIA | 2015年 / 108卷
基金：
中国国家自然科学基金; 匈牙利科学研究基金会; 瑞典研究理事会;
关键词：
High-entropy alloy; Stacking fault energy; Twinning; First-principles calculation; COCRFEMNNI HIGH-ENTROPY; MECHANICAL-PROPERTIES; PHASE-STABILITY; SINGLE-PHASE; ELASTIC-MODULI; MICROSTRUCTURE; DEFORMATION; BEHAVIOR; PERFORMANCE; PLASTICITY;
D O I：
10.1016/j.scriptamat.2015.05.041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The stacking fault energy (SFE) of paramagnetic FeCrCoNiMn high entropy alloy is investigated as a function of temperature via ab initio calculations. We divide the SFE into three major contributions: chemical, magnetic and strain parts. Structural energies, local magnetic moments and elastic moduli are used to estimate the effect of temperature on each term. The present results explain the recently reported twinning observed below room-temperature and predict the occurrence of the hexagonal phase at cryogenic conditions. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：44 / 47
页数：4
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