Effect of Trace Additions of Ti on the Microstructure of AlCoCrFeNi-Based High Entropy Alloy

Title
Effect of Trace Additions of Ti on the Microstructure of AlCoCrFeNi-Based High Entropy Alloy
Authors
장혜정김진연나영상임가람
Keywords
High Entropy Alloy; AlCoCrFeNi; Ti Effect; Nano-Scale Decomposition
Issue Date
2016-10
Publisher
Science of Advanced Materials
Citation
VOL 8, NO 10-1988
Abstract
In this study, the effect of Ti addition up to 0.075 in the atomic ratio to AlCoCrFeNi-based high entropy alloy was investigated. AlCoCrFeNi alloy has been reported to undergo spinodal decomposition into Al– Ni-rich (B2) and Cr– Fe-rich (A2) regions during solidification. The addition of trace Ti resulted in a greater degree of chemical segregation and a morphological change of Al– Ni-rich precipitate-like phase during the spinodal decomposition. In addition, trace amounts of Ti tend to be segregated along the grain boundary in the AlCoCrFeNi alloy, thus significantly refines the grain size of the AlCoCrFeNi alloy.
URI
http://pubs.kist.re.kr/handle/201004/65287
ISSN
1947-2935
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KIST Publication > Article
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