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A new strategy to design eutectic high-entropy alloys using simple mixture method
Materials & Design ( IF 8.4 ) Pub Date : 2018-03-01 , DOI: 10.1016/j.matdes.2018.01.025
Hui Jiang , Kaiming Han , Xiaoxia Gao , Yiping Lu , Zhiqiang Cao , Michael C. Gao , Jeffrey A. Hawk , Tingju Li

Abstract Eutectic high entropy alloys (EHEAs) hold promising industrial application potential, but how to design EHEA compositions remains challenging. In the present work, a simple and effective strategy by combining mixing enthalpy and constituent binary eutectic compositions was proposed to design EHEA compositions. This strategy was then applied to a series of (CoCrFeNi)Mx (M = Nb, Ta, Zr, Hf) HEAs, leading to the discovery of new EHEAs, namely, CoCrFeNiNb0.45, CoCrFeNiTa0.4, CoCrFeNiZr0.55 and CoCrFeNiHf0.4. The microstructure of these new EHEAs comprised of FCC and Laves phases in the as-cast state. The experimental result shows that this new alloy design strategy can be used to locate new EHEAs effectively.

中文翻译:

一种使用简单混合法设计共晶高熵合金的新策略

摘要 共晶高熵合金 (EHEA) 具有广阔的工业应用潜力,但如何设计 EHEA 成分仍然具有挑战性。在目前的工作中,提出了一种通过将混合焓和组成二元共晶组合物相结合的简单有效的策略来设计 EHEA 组合物。然后将该策略应用于一系列 (CoCrFeNi)Mx(M = Nb、Ta、Zr、Hf)HEAs,从而发现了新的 EHEAs,即 CoCrFeNiNb0.45、CoCrFeNiTa0.4、CoCrFeNiZr0.55 和 CoCrFeNiHf0。 4. 这些新 EHEAs 的微观结构由铸态的 FCC 和 Laves 相组成。实验结果表明,这种新的合金设计策略可以有效地定位新的 EHEA。
更新日期:2018-03-01
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