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

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

31 引用（Scopus）

摘要

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).

源语言	英语
页（从-至）	39-43
页数	5
期刊	Journal of Alloys and Compounds
卷	757
DOI	https://doi.org/10.1016/j.jallcom.2018.04.305
出版状态	已出版 - 15 8月 2018

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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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TY - JOUR

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 Al0.3CoCrFeNi high-entropy alloy, starting from serrated flow behavior

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