Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy

S. J. Sun; Y. Z. Tian; H. R. Lin; X. G. Dong; Y. H. Wang; Z. J. Wang; Z. F. Zhang

doi:10.1016/j.jallcom.2019.07.357

Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy

S. J. Sun, Y. Z. Tian, H. R. Lin, X. G. Dong, Y. H. Wang, Z. J. Wang, Z. F. Zhang

School of Materials Sience and Engineering

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

117 Scopus citations

Abstract

Single-phase equiatomic CoCrFeMnNi high-entropy alloy (HEA) specimens with three different grain sizes (0.65 μm, 2.1 μm and 105 μm) were processed by cold rolling and annealing treatment. Tensile properties were investigated over a broad temperature range from 77 K to 873 K. Superior strength-ductility balance can be achieved by refining grain size and decreasing temperature. The Hall-Petch relationship was well fitted, and the fitting parameters have a negative relation with temperature. The thermal and athermal contributions to the yield strength were revealed. This work has unveiled the superior mechanical property of HEAs at cryogenic temperatures.

Original language	English
Pages (from-to)	992-998
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	806
DOIs	https://doi.org/10.1016/j.jallcom.2019.07.357
State	Published - 25 Oct 2019

Keywords

Grain size
Hall-Petch relationship
High-entropy alloy
Mechanical properties
Temperature

Access to Document

10.1016/j.jallcom.2019.07.357

Cite this

@article{edd61b78f7da4bca91a80e331803e3a9,

title = "Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy",

abstract = "Single-phase equiatomic CoCrFeMnNi high-entropy alloy (HEA) specimens with three different grain sizes (0.65 μm, 2.1 μm and 105 μm) were processed by cold rolling and annealing treatment. Tensile properties were investigated over a broad temperature range from 77 K to 873 K. Superior strength-ductility balance can be achieved by refining grain size and decreasing temperature. The Hall-Petch relationship was well fitted, and the fitting parameters have a negative relation with temperature. The thermal and athermal contributions to the yield strength were revealed. This work has unveiled the superior mechanical property of HEAs at cryogenic temperatures.",

keywords = "Grain size, Hall-Petch relationship, High-entropy alloy, Mechanical properties, Temperature",

author = "Sun, {S. J.} and Tian, {Y. Z.} and Lin, {H. R.} and Dong, {X. G.} and Wang, {Y. H.} and Wang, {Z. J.} and Zhang, {Z. F.}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = oct,

day = "25",

doi = "10.1016/j.jallcom.2019.07.357",

language = "英语",

volume = "806",

pages = "992--998",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy

AU - Sun, S. J.

AU - Tian, Y. Z.

AU - Lin, H. R.

AU - Dong, X. G.

AU - Wang, Y. H.

AU - Wang, Z. J.

AU - Zhang, Z. F.

PY - 2019/10/25

Y1 - 2019/10/25

N2 - Single-phase equiatomic CoCrFeMnNi high-entropy alloy (HEA) specimens with three different grain sizes (0.65 μm, 2.1 μm and 105 μm) were processed by cold rolling and annealing treatment. Tensile properties were investigated over a broad temperature range from 77 K to 873 K. Superior strength-ductility balance can be achieved by refining grain size and decreasing temperature. The Hall-Petch relationship was well fitted, and the fitting parameters have a negative relation with temperature. The thermal and athermal contributions to the yield strength were revealed. This work has unveiled the superior mechanical property of HEAs at cryogenic temperatures.

AB - Single-phase equiatomic CoCrFeMnNi high-entropy alloy (HEA) specimens with three different grain sizes (0.65 μm, 2.1 μm and 105 μm) were processed by cold rolling and annealing treatment. Tensile properties were investigated over a broad temperature range from 77 K to 873 K. Superior strength-ductility balance can be achieved by refining grain size and decreasing temperature. The Hall-Petch relationship was well fitted, and the fitting parameters have a negative relation with temperature. The thermal and athermal contributions to the yield strength were revealed. This work has unveiled the superior mechanical property of HEAs at cryogenic temperatures.

KW - Grain size

KW - Hall-Petch relationship

KW - High-entropy alloy

KW - Mechanical properties

KW - Temperature

UR - http://www.scopus.com/inward/record.url?scp=85070018639&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2019.07.357

DO - 10.1016/j.jallcom.2019.07.357

M3 - 文章

AN - SCOPUS:85070018639

SN - 0925-8388

VL - 806

SP - 992

EP - 998

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Temperature dependence of the Hall–Petch relationship in CoCrFeMnNi high-entropy alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this