Influence of directional solidification parameters on the amount of quasicrystalline phase of an AlCuFe alloy

Journal of Alloys and Metallurgical Systems Pub Date : 2024-12-12 DOI:10.1016/j.jalmes.2024.100146

Thayza Pacheco dos Santos Barros , Rafael E. Caluête , Aline Karla Barbosa da Silva , Danniel Ferreira de Oliveira , Francisco Riccelly Pereira Feitosa , Bruno Alessandro Silva Guedes de Lima , Danielle Guedes de Lima

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Abstract

In this work, a casting processing route via unidirectional solidification is proposed, where the severity of cooling can be increased to maximize the amount of quasicrystalline phase. For this, the alloy with nominal composition Al_62.5Cu₂₅Fe_12.5 was melted and solidified unidirectionally under optimized processing conditions. Our results evidenced a dependence of the quasicrystalline phase percentage, obtained for an AlCuFe alloy, as a function of the position of the ingot and the type of mold used during the directional solidification process. This analysis expands the spectrum of studies on structural properties, for alloys of the AlCuFe system, indicating the cooling conditions, during the directional solidification process, necessary to maximize the amount of quasicrystalline phase.

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定向凝固参数对AlCuFe合金准晶相数量的影响

本文提出了一种单向凝固的铸造工艺路线，该路线可以增加冷却的强度，以最大限度地增加准晶相的数量。为此，在优化的工艺条件下，对标称成分为Al62.5Cu25Fe12.5的合金进行了单向熔化和凝固。我们的结果证明了准晶相百分比的依赖性，获得的AlCuFe合金，作为一个函数的位置的铸锭和定向凝固过程中使用的模具类型。这一分析扩展了对AlCuFe系合金的组织性能研究的范围，表明了定向凝固过程中最大限度地增加准晶相数量所必需的冷却条件。

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Journal of Alloys and Metallurgical Systems

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