Preparation of Fe-Al Binary System Intermetallic Compounds by Multi-Layered Roll-Bonding
来源期刊：材料热处理学报2004年第5期
论文作者：Kazuo Ichii Kazuyoshi Nakao Katsuya Akamatsu Tomohiro Hiraki Akio Nishimoto
关键词：iron aluminide; intermetallic compound; accumulative roll bonding; interfacial reaction; reactive diffusion;
摘 要：Iron aluminides exhibit good resistance to high-temperature sulfidizing and oxidizing environments and potential for structural applications at high temperatures under corrosive environments. In this study, Fe-Al intermetallic compound was prepared by multi-layered roll-bonding of elemental Fe and Al foils. The process consisted of the accumulative roll-bonding (ARB) for making a laminated Fe/Al sheet and the subsequent heat treatment promoting a solid phase reaction in the laminated Fe/Al sheet. The microstructures produced at each processing stage were characterized by optical microscopy and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). Vickers microhardness testing was used for hardness determination. A homogeneous intermetallic compound of Fe3Al or FeAl could be obtained after the subsequent heat treatment for 1.8 ks at 973 K and for 10.8 ks at 1123 or 1173 K.
Kazuo Ichii1，Kazuyoshi Nakao1，Katsuya Akamatsu1，Tomohiro Hiraki2，Akio Nishimoto1
(1.Department of Materials Science and Engineering, Kansai University, Osaka, Japan;
2.Toho Zinc Co., Ltd., Gunma, Japan)
摘要:Iron aluminides exhibit good resistance to high-temperature sulfidizing and oxidizing environments and potential for structural applications at high temperatures under corrosive environments. In this study, Fe-Al intermetallic compound was prepared by multi-layered roll-bonding of elemental Fe and Al foils. The process consisted of the accumulative roll-bonding (ARB) for making a laminated Fe/Al sheet and the subsequent heat treatment promoting a solid phase reaction in the laminated Fe/Al sheet. The microstructures produced at each processing stage were characterized by optical microscopy and scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). Vickers microhardness testing was used for hardness determination. A homogeneous intermetallic compound of Fe3Al or FeAl could be obtained after the subsequent heat treatment for 1.8 ks at 973 K and for 10.8 ks at 1123 or 1173 K.
关键词:iron aluminide; intermetallic compound; accumulative roll bonding; interfacial reaction; reactive diffusion;
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