Temperature dependent deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior

Yu Zhang; Jinshan Li; Jun Wang; William Yi Wang; Hongchao Kou; Eric Beaugnon

doi:10.1016/j.jallcom.2018.04.305

Temperature dependent deformation mechanisms of Al_0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior

Yu Zhang, Jinshan Li, Jun Wang, William Yi Wang, Hongchao Kou, Eric Beaugnon

School of Materials Sience and Engineering

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

31 Scopus citations

Abstract

The deformation mechanisms of Al_0.3CoCrFeNi high-entropy alloy (HEA) is investigated through studying the serrated flow behavior under different conditions. Results show that abnormal variation trends happen in the serration curves during compression, denoting a transition of the deformation mechanism with the temperature increasing. Microstructure characterization reveals this transition is a twining to slip deformation, which is evidenced by nanoscale twins at 600 °C but high density dislocations at 800 °C. This temperature dependent deformation behavior is thought to be related with the dislocation mobility and stacking fault energy (SFE).

Original language	English
Pages (from-to)	39-43
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	757
DOIs	https://doi.org/10.1016/j.jallcom.2018.04.305
State	Published - 15 Aug 2018

Keywords

Deformation mechanisms
High-entropy alloys
Serrations
Stacking faults
Twinning

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title = "Temperature dependent deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior",

abstract = "The deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy (HEA) is investigated through studying the serrated flow behavior under different conditions. Results show that abnormal variation trends happen in the serration curves during compression, denoting a transition of the deformation mechanism with the temperature increasing. Microstructure characterization reveals this transition is a twining to slip deformation, which is evidenced by nanoscale twins at 600 °C but high density dislocations at 800 °C. This temperature dependent deformation behavior is thought to be related with the dislocation mobility and stacking fault energy (SFE).",

keywords = "Deformation mechanisms, High-entropy alloys, Serrations, Stacking faults, Twinning",

author = "Yu Zhang and Jinshan Li and Jun Wang and Wang, {William Yi} and Hongchao Kou and Eric Beaugnon",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = aug,

day = "15",

doi = "10.1016/j.jallcom.2018.04.305",

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T1 - Temperature dependent deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior

AU - Zhang, Yu

AU - Li, Jinshan

AU - Wang, Jun

AU - Wang, William Yi

AU - Kou, Hongchao

AU - Beaugnon, Eric

PY - 2018/8/15

Y1 - 2018/8/15

N2 - The deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy (HEA) is investigated through studying the serrated flow behavior under different conditions. Results show that abnormal variation trends happen in the serration curves during compression, denoting a transition of the deformation mechanism with the temperature increasing. Microstructure characterization reveals this transition is a twining to slip deformation, which is evidenced by nanoscale twins at 600 °C but high density dislocations at 800 °C. This temperature dependent deformation behavior is thought to be related with the dislocation mobility and stacking fault energy (SFE).

AB - The deformation mechanisms of Al0.3CoCrFeNi high-entropy alloy (HEA) is investigated through studying the serrated flow behavior under different conditions. Results show that abnormal variation trends happen in the serration curves during compression, denoting a transition of the deformation mechanism with the temperature increasing. Microstructure characterization reveals this transition is a twining to slip deformation, which is evidenced by nanoscale twins at 600 °C but high density dislocations at 800 °C. This temperature dependent deformation behavior is thought to be related with the dislocation mobility and stacking fault energy (SFE).

KW - Deformation mechanisms

KW - High-entropy alloys

KW - Serrations

KW - Stacking faults

KW - Twinning

UR - http://www.scopus.com/inward/record.url?scp=85046711180&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2018.04.305

DO - 10.1016/j.jallcom.2018.04.305

M3 - 文章

AN - SCOPUS:85046711180

SN - 0925-8388

VL - 757

SP - 39

EP - 43

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Temperature dependent deformation mechanisms of Al_0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior

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Keywords

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