AlNiCrFeMn Equiatomic High Entropy Alloy: A Further Insight in Its Microstructural Evolution, Mechanical and Surface Degradation Response

E. Ananiadis; K. Lentzaris; E. Georgatis; C. Mathiou; A. Poulia; A. E. Karantzalis

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자료유형: 학술저널

저자정보: E. Ananiadis (University of Ioannina) K. Lentzaris (University of Ioannina) E. Georgatis (University of Ioannina) C. Mathiou (University of Ioannina) A. Poulia (University of Ioannina) A. E. Karantzalis (University of Ioannina)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.26 No.6

발행연도: 2020.1

수록면: 793 - 811 (19page)

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The microstructure and properties of an equiatomic AlCrFeMnNi high entropy alloy (HEA) in the as-cast condition are presented. The microstructure consists of two phases (NiAl-rich B2 and FeCr-rich A2) featuring various eutectic morphologies,ranging from regular to anomalous development. Solidification phenomena (undercooling and recalescense) are used in orderto assess the various morphological features along with theories of anomalous eutectic growth. Sliding wear testing showsan oxidation-delamination mode of material removal along with some partial abrasive mode character. Modulus of elasticityand yield point are significantly high and elongation presents at a satisfying level, whereas fracture surface examinationreveals the characteristics of a brittle fracture mode. High temperature oxidation tests show multiple oxidation phenomenaof different kinetics, formed oxide phases and material deterioration phenomena.

#High entropy alloys · Microstructure · Solidification · Sliding wear · Compression · Oxidation

참고문헌 (94)

참고문헌 신청

B.S. Murty / 2014 / High-Entropy Alloys / Butterworth-Heinemann

J. W. Yeh / 2004 / Nanostructured high-entropy alloys with multiple principal elements : novel alloy design concepts and outcomes / Adv. Eng. Mater 6:299

C. M. Lin / 2010 / Effect of aging treatment on microstructure and properties of high-entropy Cu0.5CoCrFeNi alloy / Intermetallics 18:1244

S. T. Chen / 2010 / Microstructure and properties of age-hardenable AlxCrFe1.5MnNi0.5alloys / Mater. Sci. Eng. A 527:5818

C. Y. Hsu / 2013 / Effect of aluminum content on microstructure and mechanical properties of AlxCoCrFeMo0.5Ni high-entropy alloys / J. Met. 65:1840

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