Microstructural characterization of medium entropy alloy thin films

N. Chawake; Jakub Zálešák; Christoph Gammer; Robert Franz; Megan J. Cordill; Jeong Tae Kim; Jürgen Eckert

doi:10.1016/j.scriptamat.2019.10.001

Microstructural characterization of medium entropy alloy thin films

N. Chawake
, Jakub Zálešák
, Christoph Gammer
, Robert Franz
, Megan J. Cordill
, Jeong Tae Kim
, Jürgen Eckert

Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

11 Zitate (Scopus)

Abstract

This study presents detailed microstructural investigations on single and bilayer thin films of two medium entropy alloys (MEAs) synthesized using magnetron sputter deposition. Single layer thin films of CoCrFeNi and AlCoCrFe show single-phase face-centered cubic (fcc) and body-centered (bcc) structure, respectively. The bilayer thin film consisting of CoCrFeNi (fcc) and AlCoCrFe (bcc) has a sharp interface between them with an equiatomic composition. Nanodiffraction was used to characterize planar defects in the fcc films. This first study on bilayer film of two MEAs is transformative to other systems and will help fundamental studies on high entropy alloys.

Originalsprache	Englisch
Seiten (von - bis)	22-26
Seitenumfang	5
Fachzeitschrift	Scripta materialia
Jahrgang	177.2020
Ausgabenummer	1 March
Frühes Online-Datum	17 Okt. 2019
DOIs	https://doi.org/10.1016/j.scriptamat.2019.10.001
Publikationsstatus	Veröffentlicht - 1 März 2020

Bibliographische Notiz

Funding Information:
N.C. acknowledges Lavanya Raman and Ravi Gautam (IIT Madras, India) for their help with synthesis of target materials and fruitful discussions. The authors are grateful to Sabrina Hirn for her help in the synthesis of the thin films and Josef Keckes for his help with texture measurement and analysis. N.C and J.E. acknowledge the support through the European Research Council under the Advanced Grant “INTELHYB – Next Generation of Complex Metallic Materials in Intelligent Hybrid Structures” (Grant ERC-2013-ADG-340025 ). The authors would like to acknowledge financial support by the Austrian Research Promotion Agency (FFG) in the project 3DnanoAnalytics ( FFG-No 858040 ) and thank Thomas Kremmer for help with EDS. A part of this work was carried out with the support of CEITEC Nano Research Infrastructure (ID LM2015041 , MEYS CR , 2016).

Publisher Copyright:
© 2019 Acta Materialia Inc.

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