Strengthening the CoCrFeNiNb0.25high entropy alloy by FCC precipitate

Feng He; Zhijun Wang; Sizhe Niu; Qingfeng Wu; Junjie Li; Jincheng Wang; C. T. Liu; Yingying Dang

doi:10.1016/j.jallcom.2016.01.153

Strengthening the CoCrFeNiNb_0.25high entropy alloy by FCC precipitate

Feng He, Zhijun Wang, Sizhe Niu, Qingfeng Wu, Junjie Li, Jincheng Wang, C. T. Liu, Yingying Dang

School of Materials Sience and Engineering

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

120 Scopus citations

Abstract

High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb_0.25HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb_0.25HEA was annealed at 750°C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb_0.25HEA almost doubled but its ductility was just slightly damaged.

Original language	English
Pages (from-to)	53-57
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	667
DOIs	https://doi.org/10.1016/j.jallcom.2016.01.153
State	Published - 2016

Keywords

High entropy alloys
Precipitation
Strengthening

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10.1016/j.jallcom.2016.01.153

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title = "Strengthening the CoCrFeNiNb0.25high entropy alloy by FCC precipitate",

abstract = "High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb0.25HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb0.25HEA was annealed at 750°C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb0.25HEA almost doubled but its ductility was just slightly damaged.",

keywords = "High entropy alloys, Precipitation, Strengthening",

author = "Feng He and Zhijun Wang and Sizhe Niu and Qingfeng Wu and Junjie Li and Jincheng Wang and Liu, {C. T.} and Yingying Dang",

year = "2016",

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TY - JOUR

T1 - Strengthening the CoCrFeNiNb0.25high entropy alloy by FCC precipitate

AU - He, Feng

AU - Wang, Zhijun

AU - Niu, Sizhe

AU - Wu, Qingfeng

AU - Li, Junjie

AU - Wang, Jincheng

AU - Liu, C. T.

AU - Dang, Yingying

PY - 2016

Y1 - 2016

N2 - High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb0.25HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb0.25HEA was annealed at 750°C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb0.25HEA almost doubled but its ductility was just slightly damaged.

AB - High entropy alloys (HEAs) are facing difficulties in balancing strength and ductility, and till now there is no satisfactory solution. In this paper, the CoCrFeNiNb0.25HEA with good ductility was strengthened by a face centered cubic (FCC) precipitate after annealing heat treatment. When the CoCrFeNiNb0.25HEA was annealed at 750°C, a lath-shaped FCC precipitates with nano basket-weave microstructures appeared and distributed randomly in the proeutectic FCC phase. Due to the precipitation strengthening, the yield stress of the CoCrFeNiNb0.25HEA almost doubled but its ductility was just slightly damaged.

KW - High entropy alloys

KW - Precipitation

KW - Strengthening

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U2 - 10.1016/j.jallcom.2016.01.153

DO - 10.1016/j.jallcom.2016.01.153

M3 - 文章

AN - SCOPUS:84976416321

SN - 0925-8388

VL - 667

SP - 53

EP - 57

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Strengthening the CoCrFeNiNb_0.25high entropy alloy by FCC precipitate

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Keywords

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