Dynamic precipitation-induced the negative strain rates sensitivity in VCoNi medium-entropy alloy

Zhenhua Han; Chenyang Ding; Gang Liu; Ran Wei; Guojun Zhang

doi:10.1016/j.matlet.2021.129480

Dynamic precipitation-induced the negative strain rates sensitivity in VCoNi medium-entropy alloy

Zhenhua Han
, Chenyang Ding
, Gang Liu
, Ran Wei
, Guojun Zhang

Xi'an University of Technology
Chang'an University
Zhengzhou University

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

11 Scopus citations

Abstract

The tensile behavior of VCoNi medium-entropy alloy with FCC single phase has been studied in the displacement rates range of 0.05 to 50 mm/min. The results showed that the yield strength and ultimate tensile strength of alloy decrease with increased displacement rate. Microscopic characterization revealed that dynamic precipitation of V-rich σ phase was responsible for the negative strain rates sensitivity of VCoNi alloy. The mechanism of V-rich σ phase precipitation has also been analyzed.

Original language	English
Article number	129480
Journal	Materials Letters
Volume	290
DOIs	https://doi.org/10.1016/j.matlet.2021.129480
State	Published - 1 May 2021
Externally published	Yes

Keywords

Dynamic precipitation
Medium-entropy alloy
Metals and alloys
Microstructure
Negative strain rates sensitivity

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10.1016/j.matlet.2021.129480

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title = "Dynamic precipitation-induced the negative strain rates sensitivity in VCoNi medium-entropy alloy",

abstract = "The tensile behavior of VCoNi medium-entropy alloy with FCC single phase has been studied in the displacement rates range of 0.05 to 50 mm/min. The results showed that the yield strength and ultimate tensile strength of alloy decrease with increased displacement rate. Microscopic characterization revealed that dynamic precipitation of V-rich σ phase was responsible for the negative strain rates sensitivity of VCoNi alloy. The mechanism of V-rich σ phase precipitation has also been analyzed.",

keywords = "Dynamic precipitation, Medium-entropy alloy, Metals and alloys, Microstructure, Negative strain rates sensitivity",

author = "Zhenhua Han and Chenyang Ding and Gang Liu and Ran Wei and Guojun Zhang",

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year = "2021",

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doi = "10.1016/j.matlet.2021.129480",

language = "英语",

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TY - JOUR

T1 - Dynamic precipitation-induced the negative strain rates sensitivity in VCoNi medium-entropy alloy

AU - Han, Zhenhua

AU - Ding, Chenyang

AU - Liu, Gang

AU - Wei, Ran

AU - Zhang, Guojun

PY - 2021/5/1

Y1 - 2021/5/1

N2 - The tensile behavior of VCoNi medium-entropy alloy with FCC single phase has been studied in the displacement rates range of 0.05 to 50 mm/min. The results showed that the yield strength and ultimate tensile strength of alloy decrease with increased displacement rate. Microscopic characterization revealed that dynamic precipitation of V-rich σ phase was responsible for the negative strain rates sensitivity of VCoNi alloy. The mechanism of V-rich σ phase precipitation has also been analyzed.

AB - The tensile behavior of VCoNi medium-entropy alloy with FCC single phase has been studied in the displacement rates range of 0.05 to 50 mm/min. The results showed that the yield strength and ultimate tensile strength of alloy decrease with increased displacement rate. Microscopic characterization revealed that dynamic precipitation of V-rich σ phase was responsible for the negative strain rates sensitivity of VCoNi alloy. The mechanism of V-rich σ phase precipitation has also been analyzed.

KW - Dynamic precipitation

KW - Medium-entropy alloy

KW - Metals and alloys

KW - Microstructure

KW - Negative strain rates sensitivity

UR - https://www.scopus.com/pages/publications/85101116604

U2 - 10.1016/j.matlet.2021.129480

DO - 10.1016/j.matlet.2021.129480

M3 - 文章

AN - SCOPUS:85101116604

SN - 0167-577X

VL - 290

JO - Materials Letters

JF - Materials Letters

M1 - 129480

ER -

Dynamic precipitation-induced the negative strain rates sensitivity in VCoNi medium-entropy alloy

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Keywords

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