Dual-phase high-entropy alloys for high-temperature structural applications

Title
Dual-phase high-entropy alloys for high-temperature structural applications
Authors
장혜정김진연임가람이광석이준서나영상
Keywords
Casting; Microscopy and microanalysis techniques; High-entropy alloys; Mechanical properties; Phase transformations
Issue Date
2017-12
Publisher
Journal of alloys and compounds
Citation
VOL 728-1238
Abstract
The dual-phase AlCoCrFeNi alloy exhibits excellent specific strength in the 773– 873 K temperature range. However, the phase transformation taking place above 773 K hinders its structural use at higher temperatures. In the present study, the temperature dependence of the specific strength of the AlCoCrFeNi alloy has been examined from a microstructural point of view. One of the key findings of this work is that the high-temperature phase stability of the dual-phase alloy is strongly affected by its microstructural morphology; this finding provides new insights into the application of high-entropy alloys as high-temperature structural materials, for instance in aerospace engine components.
URI
http://pubs.kist.re.kr/handle/201004/66555
ISSN
0925-8388
Appears in Collections:
KIST Publication > Article
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