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A promising new cla...
A promising new class of high-temperature alloys: Eutectic high-entropy alloys
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Lu, Y. (author)
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Dong, Y. (author)
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- Guo, Sheng, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Jiang, L. (author)
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Kang, H. (author)
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Wang, T. (author)
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Wen, B. (author)
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Wang, Z. (author)
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Jie, J. (author)
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Cao, Z. (author)
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Ruan, H. (author)
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Li, T. (author)
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(creator_code:org_t)
- 2014-08-27
- 2014
- English.
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In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322 .- 2045-2322. ; 4, s. 6200-
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Abstract
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- High-entropy alloys (HEAs) can have either high strength or high ductility, and a simultaneous achievement of both still constitutes a tough challenge. The inferior castability and compositional segregation of HEAs are also obstacles for their technological applications. To tackle these problems, here we proposed a novel strategy to design HEAs using the eutectic alloy concept, i.e. to achieve a microstructure composed of alternating soft fcc and hard bcc phases. As a manifestation of this concept, an AlCoCrFeNi 2.1 (atomic portion) eutectic high-entropy alloy (EHEA) was designed. The as-cast EHEA possessed a fine lamellar fcc/B2 microstructure, and showed an unprecedented combination of high tensile ductility and high fracture strength at room temperature. The excellent mechanical properties could be kept up to 700°C. This new alloy design strategy can be readily adapted to large-scale industrial production of HEAs with simultaneous high fracture strength and high ductility.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Lu, Y.
-
Dong, Y.
-
Guo, Sheng, 1981
-
Jiang, L.
-
Kang, H.
-
Wang, T.
-
show more...
-
Wen, B.
-
Wang, Z.
-
Jie, J.
-
Cao, Z.
-
Ruan, H.
-
Li, T.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Metallurgy and M ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Scientific Repor ...
- By the university
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Chalmers University of Technology