Thermodynamic and kinetic analysis of the melt spinning process of Fe-6.5 wt.% Si alloy

被引：35
|
作者：
Cui, Senlin [1 ]
Ouyang, Gaoyuan [2 ]
Ma, Tao [3 ]
Macziewski, Chad R. [2 ]
Levitas, Valery I. [1 ,2 ,3 ,4 ]
Zhou, Lin [3 ]
Kramer, Matthew J. [3 ]
Cui, Jun [2 ,3 ]
机构：
[1] Iowa State Univ, Dept Aerosp Engn, Ames, IA 50011 USA
[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA
[3] Ames Lab, Dept Energy, Ames, IA 50011 USA
[4] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 771卷
关键词：
Fe-6.5 wt.% Si; Melt spinning; Quenching; Diffusion; Domain growth; ORDER-DISORDER TRANSITION; HIGH-SILICON STEEL; ELECTRICAL APPLICATIONS; ATOMIC MOBILITY; NI ALLOYS; FE; DIFFUSION; PHASE; INTERDIFFUSION; SYSTEMS;
D O I：
10.1016/j.jallcom.2018.08.293
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The microstructural evolution of Fe-6.5 wt.% Si alloy during rapid solidification was studied over a quenching rate of 4 x 10(4) K/s to 8 x 10(5) K/s. The solidification and solid-state diffusional transformation processes during rapid cooling were analyzed via thermodynamic and kinetic calculations. The Allen-Cahn theory was adapted to model the experimentally measured bcc_B2 antiphase domain sizes under different cooling rates. The model was calibrated based on the experimentally determined bcc_B2 antiphase domain sizes for different wheel speeds and the resulting cooling rates. Good correspondence of the theoretical and experimental data was obtained over the entire experimental range of cooling rates. Along with the asymptotic domain size value at the infinite cooling rates, the developed model represents a reliable extrapolation for the cooling rate > 10(6) K/s and allows one to optimize the quenching process. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：643 / 648
页数：6
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