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- Lu, Y. (author)
A promising new class of high-temperature alloys: Eutectic high-entropy alloys
- Article/chapterEnglish2014
Publisher, publication year, extent ...
- 2014-08-27
- Springer Science and Business Media LLC,2014
- electronicrdacarrier
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- LIBRIS-ID:oai:research.chalmers.se:a101d01c-8384-4ba5-a194-bfaa69654ee2
- https://doi.org/10.1038/srep06200DOI
- https://research.chalmers.se/publication/204377URI
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- Language:English
- Summary in:English
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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 and genre
- 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
Added entries (persons, corporate bodies, meetings, titles ...)
- Dong, Y. (author)
- Guo, Sheng,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)shengg (author)
- Jiang, L. (author)
- Kang, H. (author)
- Wang, T. (author)
- Wen, B. (author)
- Wang, Z. (author)
- Jie, J. (author)
- Cao, Z. (author)
- Ruan, H. (author)
- Li, T. (author)
- Chalmers tekniska högskola (creator_code:org_t)
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- In:Scientific Reports: Springer Science and Business Media LLC4, s. 6200-2045-23222045-2322
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