A phase-field model of phase transitions and domain structures of NiCoMnIn metamagnetic alloys

被引：31
|
作者：
Huang, H. B. [1 ,2 ]
Ma, X. Q. [1 ]
Wang, J. J. [3 ]
Liu, Z. H. [1 ]
He, W. Q. [1 ]
Chen, L. Q. [2 ,3 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[2] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
ACTA MATERIALIA | 2015年 / 83卷
基金：
美国国家科学基金会;
关键词：
Phase-field model; Micromagnetic simulations; Metamagnetic alloys; NiCoMnIn; ENERGY; STRAIN;
D O I：
10.1016/j.actamat.2014.10.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We developed a computational model to investigate the magnetic and structural phase transitions in metamagnetic shape memory alloys. The model combined the phase-field method with micromagnetic simulations. The model was used to calculate the transition temperature from ferromagnetic austenite to antiferromagnetic martensite, the Curie temperature, and their response to an external magnetic field, for the typical metamagnetic alloy NiCoMnIn The calculated magnetization curves at different temperatures are consistent with reported experimental measurements. The simulations show that the walls of martensite twins are superimposed with the 90 degrees magnetic domain walls of the low-temperature martensite phase, because of magnetostructural order parameter coupling. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：333 / 340
页数：8
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