The characteristics of serration in Al0.5CoCrFeNi high entropy alloy

Sizhe Niu; Hongchao Kou; Yu Zhang; Jun Wang; Jinshan Li

doi:10.1016/j.msea.2017.05.075

The characteristics of serration in Al_0.5CoCrFeNi high entropy alloy

Sizhe Niu, Hongchao Kou, Yu Zhang, Jun Wang, Jinshan Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

74 Scopus citations

Abstract

Serrated flow in Al_0.5CoCrFeNi high entropy alloy (HEA) was studied at the temperature range of 200–500 °C with strain rates from 10⁻³ s⁻¹ to 10⁻⁴ s⁻¹. Results showed that serration type would transform from type A to type A+B, and eventually evolved into type B+C with the increasing temperature and decreasing strain rate. The dynamic strain aging was the reason for the Portevin-Le Chatelier (PLC) effect, and Al played a crucial role in the interaction between solute atoms and dislocation. The characteristics of serration are revealed through statistics firstly in HEAs.

Original language	English
Pages (from-to)	96-103
Number of pages	8
Journal	Materials Science and Engineering: A
Volume	702
DOIs	https://doi.org/10.1016/j.msea.2017.05.075
State	Published - 15 Aug 2017

Keywords

Dynamic strain aging
High entropy alloys
PLC effect

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10.1016/j.msea.2017.05.075

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title = "The characteristics of serration in Al0.5CoCrFeNi high entropy alloy",

abstract = "Serrated flow in Al0.5CoCrFeNi high entropy alloy (HEA) was studied at the temperature range of 200–500 °C with strain rates from 10−3 s−1 to 10−4 s−1. Results showed that serration type would transform from type A to type A+B, and eventually evolved into type B+C with the increasing temperature and decreasing strain rate. The dynamic strain aging was the reason for the Portevin-Le Chatelier (PLC) effect, and Al played a crucial role in the interaction between solute atoms and dislocation. The characteristics of serration are revealed through statistics firstly in HEAs.",

keywords = "Dynamic strain aging, High entropy alloys, PLC effect",

author = "Sizhe Niu and Hongchao Kou and Yu Zhang and Jun Wang and Jinshan Li",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = aug,

day = "15",

doi = "10.1016/j.msea.2017.05.075",

language = "英语",

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journal = "Materials Science and Engineering: A",

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TY - JOUR

T1 - The characteristics of serration in Al0.5CoCrFeNi high entropy alloy

AU - Niu, Sizhe

AU - Kou, Hongchao

AU - Zhang, Yu

AU - Wang, Jun

AU - Li, Jinshan

PY - 2017/8/15

Y1 - 2017/8/15

N2 - Serrated flow in Al0.5CoCrFeNi high entropy alloy (HEA) was studied at the temperature range of 200–500 °C with strain rates from 10−3 s−1 to 10−4 s−1. Results showed that serration type would transform from type A to type A+B, and eventually evolved into type B+C with the increasing temperature and decreasing strain rate. The dynamic strain aging was the reason for the Portevin-Le Chatelier (PLC) effect, and Al played a crucial role in the interaction between solute atoms and dislocation. The characteristics of serration are revealed through statistics firstly in HEAs.

AB - Serrated flow in Al0.5CoCrFeNi high entropy alloy (HEA) was studied at the temperature range of 200–500 °C with strain rates from 10−3 s−1 to 10−4 s−1. Results showed that serration type would transform from type A to type A+B, and eventually evolved into type B+C with the increasing temperature and decreasing strain rate. The dynamic strain aging was the reason for the Portevin-Le Chatelier (PLC) effect, and Al played a crucial role in the interaction between solute atoms and dislocation. The characteristics of serration are revealed through statistics firstly in HEAs.

KW - Dynamic strain aging

KW - High entropy alloys

KW - PLC effect

UR - https://www.scopus.com/pages/publications/85021920634

U2 - 10.1016/j.msea.2017.05.075

DO - 10.1016/j.msea.2017.05.075

M3 - 文章

AN - SCOPUS:85021920634

SN - 0921-5093

VL - 702

SP - 96

EP - 103

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

The characteristics of serration in Al_0.5CoCrFeNi high entropy alloy

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Keywords

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