Phase Equilibria of the Fe-Si-Cr-Al Quaternary System at 800 °C

被引：0
|
作者：
Wenjie Chen
Haoyu Yang
Jingyu Yan
Ya Liu
Changjun Wu
Xuping Su
机构：
[1] Changzhou University,Jiangsu Key Laboratory of Materials Surface Science and Technology
[2] Changzhou University,Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering
来源：
Journal of Phase Equilibria and Diffusion | 2021年 / 42卷
关键词：
Fe-Si-Cr-Al quaternary system; Isothermal section; Phase equilibrium; Ordered- disordered phases;
D O I：
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摘要：
The isothermal sections of the Fe-Si-Cr-Al quaternary system at 800 °C with the Fe composition being fixed at 67 at.% and 50 at.% were determined experimentally using optical microscopy, scanning electron microscopy coupled with energy dispersive x-ray spectroscopy, and x-ray diffractometry. Two three-phase regions (BCC-A2 + σ + D03, FeSi + Fe5Si3 + D03) were found in the isothermal sections at 67 at.% Fe. Phase microstructures of Fe-corner in the quaternary Fe-Si-Cr-Al system were investigated, especially the multiphase regions containing bcc disordered phase and bcc ordered phases. D03 occupies almost half of the isothermal section and could maintain equilibrium with all phases (BCC-A2, σ, Fe5Si3, FeSi) in the isothermal section. One four-phase region (BCC-A2 + σ + Cr3Si + D03) and five three-phase regions (Cr3Si + D03 + BCC-A2, Cr3Si + σ + BCC-A2, Cr3Si + D03 + σ, Cr3Si + Fe5Si3 + D03, FeSi + Fe5Si3 + D03) were found in the isothermal section at 50 at.% Fe.
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页码：290 / 302
页数：12
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