High-strength and high-ductility AlCoCrFeNi2.1 eutectic high-entropy alloy achieved via precipitation strengthening in a heterogeneous structure

High-entropy alloys (HEAs) have displayed numerous unique features, however, high strength and high ductility are still the urgently desired mechanical property. The current study reports an outstanding combination of high strength and excellent ductility achieved in a eutectic high-entropy alloy (E...

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Bibliographic Details
Published inScripta materialia Vol. 186; pp. 336 - 340
Main Authors Xiong, Ting, Zheng, Shijian, Pang, Jingyu, Ma, Xiuliang
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.09.2020
Subjects
Heterogeneous structure
High ductility
High strength
High-entropy alloys (HEAs)
Precipitation strengthening
High ductility
Precipitation strengthening
Heterogeneous structure
High strength
High-entropy alloys (HEAs)
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Summary:High-entropy alloys (HEAs) have displayed numerous unique features, however, high strength and high ductility are still the urgently desired mechanical property. The current study reports an outstanding combination of high strength and excellent ductility achieved in a eutectic high-entropy alloy (EHEA) AlCoCrFeNi2.1. The great achievement relays on a dual-phase heterogeneous structure strengthened with nano-precipitates. The heterogeneous structure provides the alloy a good combination of strength and ductility, and nano-precipitates in both of the face-centered cubic (FCC) and B2 phases generate an extra significant contribution to strength. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2020.04.035