Rapid growth of FeAl intermetallic compound under high undercooling conditions

Yongjun Lü; Bingbo Wei

doi:10.1360/03ww0095

Rapid growth of FeAl intermetallic compound under high undercooling conditions

Yongjun Lü, Bingbo Wei

物理科学与技术学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

2 引用（Scopus）

摘要

Fe-58at%Al alloy is undercooled up to 222 K (0.15T_L) with the drop tube technique. It is found that there exists a critical undercooling about 185 K, beyond which a "dendrite-equiaxed" growth morphology transition occurs in FeAl intermetallic compound. This transition is characterized by sharp decrease of its grain size. Once the undercooling exceeds 215 K, the peritectic transformation is suppressed completely and a fibrous structure is formed, which results from the cooperative growth of FeAl and FeAl₂ compounds.

源语言	英语
页（从-至）	547-551
页数	5
期刊	Chinese Science Bulletin
卷	49
期	6
DOI	https://doi.org/10.1360/03ww0095
出版状态	已出版 - 2004

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AU - Wei, Bingbo

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N2 - Fe-58at%Al alloy is undercooled up to 222 K (0.15TL) with the drop tube technique. It is found that there exists a critical undercooling about 185 K, beyond which a "dendrite-equiaxed" growth morphology transition occurs in FeAl intermetallic compound. This transition is characterized by sharp decrease of its grain size. Once the undercooling exceeds 215 K, the peritectic transformation is suppressed completely and a fibrous structure is formed, which results from the cooperative growth of FeAl and FeAl2 compounds.

AB - Fe-58at%Al alloy is undercooled up to 222 K (0.15TL) with the drop tube technique. It is found that there exists a critical undercooling about 185 K, beyond which a "dendrite-equiaxed" growth morphology transition occurs in FeAl intermetallic compound. This transition is characterized by sharp decrease of its grain size. Once the undercooling exceeds 215 K, the peritectic transformation is suppressed completely and a fibrous structure is formed, which results from the cooperative growth of FeAl and FeAl2 compounds.

KW - Dendrite growth

KW - Grain refining

KW - Peritectic

KW - Rapid solidification

KW - Undercooling

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Rapid growth of FeAl intermetallic compound under high undercooling conditions

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