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Incorrect predictions of simple solid solution high entropy alloys: Cause and possible solution

SCRIPTA MATERIALIA (2017)

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期刊

SCRIPTA MATERIALIA
卷 127, 期 -, 页码 6-9

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2016.08.024

关键词

Casting; Intermetallic compound; Phase transformation; High-entropy alloy

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Nanoscience & Nanotechnology Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

资金

  1. Ministry of Science and Technology, Taiwan [MOST 103-222-E-005-023, MOST 104-2221-E-005-015]

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One of the key issues in high-entropy alloys (HEAs) is the development of alloys that contains only simple solid solution (SSS) phases. Researchers have proposed various parametric models to predict SSS formation. However, incorrect predictions are not uncommon. Here, we investigate the main cause of these mispredictions. It is found that the premises of most existing models do riot apply to some intermetallic phases. Hence, the models cannot distinguish alloys containing these intermetallics from alloys containing only SSSs. A possible solution to this issue is proposed. With this strategy, the accuracy of existing models can be evidently improved. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

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