A novel bulk eutectic high-entropy alloy with outstanding as-cast specific yield strengths at elevated temperatures

Due to their excellent properties and great potential for industrial application, eutectic high-entropy alloys (EHEAs) have been a hot topic of study over the past few years. The current study reports a novel AlCr1.3TiNi2 EHEA with a low density and outstanding mechanical properties at elevated temp...

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Bibliographic Details
Published inScripta materialia Vol. 204; p. 114132
Main Authors Wang, Mingliang, Lu, Yiping, Wang, Tongmin, Zhang, Chuan, Cao, Zhiqiang, Li, Tingju, Liaw, Peter K.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2021
Subjects
Eutectic high-entropy alloy
Hardness
L21 structure
Specific yield strength
Eutectic high-entropy alloy
Specific yield strength
Hardness
L21 structure
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Summary:Due to their excellent properties and great potential for industrial application, eutectic high-entropy alloys (EHEAs) have been a hot topic of study over the past few years. The current study reports a novel AlCr1.3TiNi2 EHEA with a low density and outstanding mechanical properties at elevated temperatures. A kilogram-scale EHEA ingot with uniform and ultrafine L21 and BCC lamellar structures (interlamellar spacing ~ 400 nm) was firstly prepared by a direct solidification method. The as-cast AlCr1.3TiNi2 EHEA exhibits much higher room- and high-temperature hardness and specific yield strength values than most reported refractory high-entropy alloys (RHEAs), EHEAs, and conventional Ni- and Ti-based alloys. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2021.114132