期刊
SCRIPTA MATERIALIA
卷 146, 期 -, 页码 5-8出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.10.027
关键词
CALPHAD; Phase diagram; Metal and alloys; Microstructure
类别
资金
- Department of Energy Office of Science
- Small Business Innovation Research program [DE-SC0013220]
- U.S. Department of Energy (DOE) [DE-SC0013220] Funding Source: U.S. Department of Energy (DOE)
Long-term stability of high entropy alloys (HEAs) is a critical consideration for the design and practical application of HEAs. It has long been assumed that many HEAs are a kinetically-stabilized metastable structure, and recent experiments have confirmed this hypothesis by observing HEA decomposition after long-term equilibration. In the present work, we demonstrate the use of the CALculation of PHAse Diagrams (CALPHAD) approach to predict HEA stability and processing parameters, comparing experimental long-term annealing observations to CALPHAD phase diagrams from a commercially-available HEA database. We find good agreement between single-and multi-phase predictions and experiments. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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