A Criterion for Topological Close-Packed Phase Formation in High Entropy Alloys

A Criterion for Topological Close-Packed Phase Formation in High Entropy Alloys

The stability of topological close-packed (TCP) phases were found to be well related to the average value of the d-orbital energy level \( \overline{Md} \) for most reported high entropy alloys (HEAs). Excluding some HEAs that contain high levels of the elements aluminum and vanadium, the results of...

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Veröffentlicht in:Entropy (Basel, Switzerland) Switzerland), 2015-04, Vol.17 (4), p.2355-2366
Hauptverfasser: Lu, Yiping, Dong, Yong, Jiang, Li, Wang, Tongmin, Li, Tingju, Zhang, Yong
Format: Artikel
Sprache:eng
Schlagworte:
alloy design
Alloys
Criteria
d-orbital energy level
Energy levels
Entropy
Entropy of formation
Formations
high entropy alloys
Stability
TCP (protocol)
TCP phases
Topology
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Zusammenfassung:The stability of topological close-packed (TCP) phases were found to be well related to the average value of the d-orbital energy level \( \overline{Md} \) for most reported high entropy alloys (HEAs). Excluding some HEAs that contain high levels of the elements aluminum and vanadium, the results of this study indicated that the TCP phases form at \( \overline{Md} \) > 1.09. This criterion, as a semi-empirical method, can play a key role in designing and preparing HEAs with high amounts of transitional elements.
ISSN:1099-4300
1099-4300
DOI:10.3390/e17042355