Microstructures and mechanical properties of (AlCoCrFeMn)100 − xCux high-entropy alloys

Gang Qin; Yufeng Zhang; Ruirun Chen; Huiting Zheng; Liang Wang; Yanqing Su; Hongsheng Ding; Jingjie Guo; Hengzhi Fu

doi:10.1080/02670836.2019.1629541

Microstructures and mechanical properties of (AlCoCrFeMn)_{100 − x}Cu_x high-entropy alloys

Gang Qin, Yufeng Zhang, Ruirun Chen^*, Huiting Zheng, Liang Wang, Yanqing Su, Hongsheng Ding, Jingjie Guo, Hengzhi Fu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A series of (AlCoCrFeMn)_{100 −}_xCu_x high-entropy alloys (0, 4, 8, 12, 16 at.-%) were prepared by vacuum arc furnace melting and their phase composition, microstructure and mechanical properties were systematically investigated. The results show that Cu can induce phase transformation from the orthorhombic phase to the Laves phase in (AlCoCrFeMn)_{100 −}_xCu_x high-entropy alloys and the volume fractions of Laves phase increases from 0 to 70% with increasing Cu content. The compression fracture strain increases from 5 to 16% and the compression fracture strength also increases from 1380 to 2140 MPa with Cu content increases. The increased volume fraction of the Laves phase is the main factor for the ductility increases.

Original language	English
Pages (from-to)	1457-1463
Number of pages	7
Journal	Materials Science and Technology
Volume	35
Issue number	12
DOIs	https://doi.org/10.1080/02670836.2019.1629541
Publication status	Published - 13 Aug 2019
Externally published	Yes

Keywords

Cu
High-entropy alloys
mechanical properties
phase transformation

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10.1080/02670836.2019.1629541

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title = "Microstructures and mechanical properties of (AlCoCrFeMn)100 − xCux high-entropy alloys",

abstract = "A series of (AlCoCrFeMn)100 −xCux high-entropy alloys (0, 4, 8, 12, 16 at.-%) were prepared by vacuum arc furnace melting and their phase composition, microstructure and mechanical properties were systematically investigated. The results show that Cu can induce phase transformation from the orthorhombic phase to the Laves phase in (AlCoCrFeMn)100 −xCux high-entropy alloys and the volume fractions of Laves phase increases from 0 to 70% with increasing Cu content. The compression fracture strain increases from 5 to 16% and the compression fracture strength also increases from 1380 to 2140 MPa with Cu content increases. The increased volume fraction of the Laves phase is the main factor for the ductility increases.",

keywords = "Cu, High-entropy alloys, mechanical properties, phase transformation",

author = "Gang Qin and Yufeng Zhang and Ruirun Chen and Huiting Zheng and Liang Wang and Yanqing Su and Hongsheng Ding and Jingjie Guo and Hengzhi Fu",

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year = "2019",

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T1 - Microstructures and mechanical properties of (AlCoCrFeMn)100 − xCux high-entropy alloys

AU - Qin, Gang

AU - Zhang, Yufeng

AU - Chen, Ruirun

AU - Zheng, Huiting

AU - Wang, Liang

AU - Su, Yanqing

AU - Ding, Hongsheng

AU - Guo, Jingjie

AU - Fu, Hengzhi

PY - 2019/8/13

Y1 - 2019/8/13

N2 - A series of (AlCoCrFeMn)100 −xCux high-entropy alloys (0, 4, 8, 12, 16 at.-%) were prepared by vacuum arc furnace melting and their phase composition, microstructure and mechanical properties were systematically investigated. The results show that Cu can induce phase transformation from the orthorhombic phase to the Laves phase in (AlCoCrFeMn)100 −xCux high-entropy alloys and the volume fractions of Laves phase increases from 0 to 70% with increasing Cu content. The compression fracture strain increases from 5 to 16% and the compression fracture strength also increases from 1380 to 2140 MPa with Cu content increases. The increased volume fraction of the Laves phase is the main factor for the ductility increases.

AB - A series of (AlCoCrFeMn)100 −xCux high-entropy alloys (0, 4, 8, 12, 16 at.-%) were prepared by vacuum arc furnace melting and their phase composition, microstructure and mechanical properties were systematically investigated. The results show that Cu can induce phase transformation from the orthorhombic phase to the Laves phase in (AlCoCrFeMn)100 −xCux high-entropy alloys and the volume fractions of Laves phase increases from 0 to 70% with increasing Cu content. The compression fracture strain increases from 5 to 16% and the compression fracture strength also increases from 1380 to 2140 MPa with Cu content increases. The increased volume fraction of the Laves phase is the main factor for the ductility increases.

KW - Cu

KW - High-entropy alloys

KW - mechanical properties

KW - phase transformation

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ER -

Microstructures and mechanical properties of (AlCoCrFeMn)_{100 − x}Cu_x high-entropy alloys

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Keywords

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