Influence of irradiation temperature on void swelling in NiCoFeCrMn and NiCoFeCrPd

Tai ni Yang; Chenyang Lu; Gihan Velisa; Ke Jin; Pengyuan Xiu; Yanwen Zhang; Hongbin Bei; Lumin Wang

doi:10.1016/j.scriptamat.2018.08.021

Influence of irradiation temperature on void swelling in NiCoFeCrMn and NiCoFeCrPd

Tai ni Yang, Chenyang Lu^*, Gihan Velisa, Ke Jin, Pengyuan Xiu, Yanwen Zhang, Hongbin Bei, Lumin Wang

^*Corresponding author for this work

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

86 Citations (Scopus)

Abstract

Using ion irradiation and transmission electron microscopy, temperature dependent void swelling and dislocation loop evolution in equiatomic NiCoFeCrMn and NiCoFeCrPd high entropy alloys were investigated. Voids were observed in all tested conditions. An order higher of swelling was observed in both HEAs as temperature increased from 420 to 580 °C. Alloying with Pd was found to have a stronger suppression effect on void and dislocation loop growth than alloying with Mn. Possible contributions to the swelling resistance were explored, including localized lattice distortion and higher defect migration barrier in NiCoFeCrPd. Additionally, no phase decomposition was observed in either alloy.

Original language	English
Pages (from-to)	57-61
Number of pages	5
Journal	Scripta Materialia
Volume	158
DOIs	https://doi.org/10.1016/j.scriptamat.2018.08.021
Publication status	Published - 1 Jan 2019
Externally published	Yes

Keywords

High-entropy alloys
Ion irradiation
Temperature dependent void swelling
Transmission electron microscope (TEM)

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10.1016/j.scriptamat.2018.08.021

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title = "Influence of irradiation temperature on void swelling in NiCoFeCrMn and NiCoFeCrPd",

abstract = "Using ion irradiation and transmission electron microscopy, temperature dependent void swelling and dislocation loop evolution in equiatomic NiCoFeCrMn and NiCoFeCrPd high entropy alloys were investigated. Voids were observed in all tested conditions. An order higher of swelling was observed in both HEAs as temperature increased from 420 to 580 °C. Alloying with Pd was found to have a stronger suppression effect on void and dislocation loop growth than alloying with Mn. Possible contributions to the swelling resistance were explored, including localized lattice distortion and higher defect migration barrier in NiCoFeCrPd. Additionally, no phase decomposition was observed in either alloy.",

keywords = "High-entropy alloys, Ion irradiation, Temperature dependent void swelling, Transmission electron microscope (TEM)",

author = "Yang, {Tai ni} and Chenyang Lu and Gihan Velisa and Ke Jin and Pengyuan Xiu and Yanwen Zhang and Hongbin Bei and Lumin Wang",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2019",

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day = "1",

doi = "10.1016/j.scriptamat.2018.08.021",

language = "English",

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TY - JOUR

T1 - Influence of irradiation temperature on void swelling in NiCoFeCrMn and NiCoFeCrPd

AU - Yang, Tai ni

AU - Lu, Chenyang

AU - Velisa, Gihan

AU - Jin, Ke

AU - Xiu, Pengyuan

AU - Zhang, Yanwen

AU - Bei, Hongbin

AU - Wang, Lumin

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Using ion irradiation and transmission electron microscopy, temperature dependent void swelling and dislocation loop evolution in equiatomic NiCoFeCrMn and NiCoFeCrPd high entropy alloys were investigated. Voids were observed in all tested conditions. An order higher of swelling was observed in both HEAs as temperature increased from 420 to 580 °C. Alloying with Pd was found to have a stronger suppression effect on void and dislocation loop growth than alloying with Mn. Possible contributions to the swelling resistance were explored, including localized lattice distortion and higher defect migration barrier in NiCoFeCrPd. Additionally, no phase decomposition was observed in either alloy.

AB - Using ion irradiation and transmission electron microscopy, temperature dependent void swelling and dislocation loop evolution in equiatomic NiCoFeCrMn and NiCoFeCrPd high entropy alloys were investigated. Voids were observed in all tested conditions. An order higher of swelling was observed in both HEAs as temperature increased from 420 to 580 °C. Alloying with Pd was found to have a stronger suppression effect on void and dislocation loop growth than alloying with Mn. Possible contributions to the swelling resistance were explored, including localized lattice distortion and higher defect migration barrier in NiCoFeCrPd. Additionally, no phase decomposition was observed in either alloy.

KW - High-entropy alloys

KW - Ion irradiation

KW - Temperature dependent void swelling

KW - Transmission electron microscope (TEM)

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U2 - 10.1016/j.scriptamat.2018.08.021

DO - 10.1016/j.scriptamat.2018.08.021

M3 - Article

AN - SCOPUS:85052470699

SN - 1359-6462

VL - 158

SP - 57

EP - 61

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Influence of irradiation temperature on void swelling in NiCoFeCrMn and NiCoFeCrPd

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Keywords

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