双相高熵合金相分数预测的计算方法

A. Negi, Ayush Sourav, T. Shanmugasundaram
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引用次数: 0

摘要

二次相的类型和分数是决定材料性能的重要因素。首次采用计算方法预测了双相高熵合金体系的相分数。在这项工作中,提出了一个新的参数δc(临界晶格畸变)。用价电子浓度(VEC)和δc预测相分数。为了验证该模型,采用真空电弧熔炼法合成了一系列AlxCoCrFeNi (x=0.3, 0.5, 0.7)合金,并用x射线衍射和电子背散射衍射技术对其进行了分析。实验结果与预测值吻合较好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Computational Approach to Predict Phase Fraction in Dual-Phase High Entropy Alloys
Type and fraction of secondary phase play a significant role in determining the properties. For the first time, a computational method is used to predict the phase fraction in dual phase high entropy alloy systems. In this work, a new parameter δc(critical lattice distortion) is proposed. Valence electron concentration (VEC) and δc are used to predict phase fraction. To validate the model a series of AlxCoCrFeNi (x=0.3, 0.5, 0.7) alloy was synthesized by vacuum arc melting and analysed using x-ray diffraction and electron backscatter diffraction techniques. It is found that the experimental results agree closely with the predicted value.
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