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arXiv 2001.07954cond-mat.mtrl-sci
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Al-Co-Cr-Fe-Ni系共晶高熵合金的设计

The design of eutectic high entropy alloys in Al-Co-Cr-Fe-Ni system

Ali Shafiei

摘要:

本文提出了一种预测Al-Co-Cr-Fe-Ni系共晶高熵合金成分的简单方法。提出了在该体系中某些共晶合金之间存在共晶线,因此,通过混合位于同一共晶线上的合金可以获得新的共晶或近共晶成分。该方法被应用于一系列实验验证的共晶合金,并为Al-Co-Cr-Fe-Ni系设计了新的共晶或近共晶合金。通过对Al-Co-Cr-Fe-Ni系共晶合金成分的研究,提出了反映共晶合金中各组成元素浓度关系的成分图。组成图表明,EHEAs是来自二元和三元共晶合金。此外,所提出的图表可以被认为是一种方便的方法来评估EHEAs在Al-Co-Cr-Fe-Ni系统的组成。

英文摘要:

In the present work, a simple approach is proposed for predicting the compositions of eutectic high entropy alloys (EHEAs) in Al-Co-Cr-Fe-Ni system. It is proposed that eutectic lines exist between certain eutectic alloys in this system and, as a result, new eutectic or near-eutectic compositions can be obtained by mixing the alloys which are located on the same eutectic line. The approach is applied for a series of experimentally verified eutectic alloys and new eutectic or near-eutectic alloys are designed for Al-Co-Cr-Fe-Ni system. Furthermore, by investigating the compositions of verified eutectic alloys in Al-Co-Cr-Fe-Ni system, compositional diagrams are proposed which show the relations between the concentrations of constituent elements in eutectic alloys. The compositional diagrams suggest that EHEAs are derived from binary and ternary eutectic alloys. Moreover, the proposed diagrams can be considered as convenient methods for evaluating the composition of EHEAs in Al-Co-Cr-Fe-Ni system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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