3D打印CoCrFeMnNi高熵合金的微观组织、室温及低温力学性能

doi:10.11896/cldb.19080182

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Abstract High-entropy alloys (HEAs) have been considered as a new class of metallic alloys famous for their unique microstructures, comprehensive performances and wide applications. In this study,selective laser melting technology has been utilized to fabricate CoCrFeMnNi HEA. Phases, microstructure and mechanical properties of the as-built specimens at both room and cryogenic temperatures were investigated. The optimized printing parameters and the high relative density alloy with excellent tensile properties were derived. The tensile strength was 647 MPa at room temperature and 893.8 MPa at cryogenic temperature, respectively, demonstrating good combination of strength and ductility at cryogenic temperature.

Key words： high-entropy alloy CoCrFeMnNi selective laser melting cryogenic mechanical properties additive manufacturing

Published: 13 May 2020

CLC number:

TB383

Fund:This work was financially supported by the Layout Project of Disciplines of the Science and Technology Innovation Committee of Shenzhen Municipality (JCYJ20180504165824643, JCYJ20170817111811303).

About author:: Guang Liu is a master student of the Department of Materials Science and Engineering, Southern University of Science and Technology under the guidance of asso-ciate professor Ming Yan, and he is jointly trained at Harbin Industrial University. The main research field is additively manufacturing in high-entropy alloys.
Ming Yan graduated from Harbin Institute of Technology. He joined Southern University of Science and Technology (SUSTech) in December 2014. Before joining SUSTech, he was an ARC Australian Postdoctoral Fellow and then Queensland Smart Future Fellow (Early Career) associated with The University of Queensland. He is taking the Humboldt Research Fellowship for Experienced Researchers with Helmholtz Zentrum Geesthacht. His research focuses on 3D Printing & Additive Manufacturing of metallic materials. He has published more than 120 international journal papers and book chapters.

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	LIU Guang
	ZHOU Suyuan
	YANG Haiwei
	CHEN Peng
	OUYANG Xiao
	YAN Ming

Cite this article:

LIU Guang,ZHOU Suyuan,YANG Haiwei, et al. 3D Printed CoCrFeMnNi High-entropy Alloy: Microstructure and Mechanical Properties at Room and Cryogenic Temperatures[J]. Materials Reports, 2020, 34(11): 11076-11080.

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http://www.mater-rep.com/EN/10.11896/cldb.19080182 OR http://www.mater-rep.com/EN/Y2020/V34/I11/11076

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