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

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

117 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	992-998
页数	7
期刊	Journal of Alloys and Compounds
卷	806
DOI	https://doi.org/10.1016/j.jallcom.2019.07.357
出版状态	已出版 - 25 10月 2019

访问文件

10.1016/j.jallcom.2019.07.357

其它文件与链接

链接到 Scopus 的出版物

引用此

@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

摘要

访问文件

其它文件与链接

指纹

引用此