Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation

Mo Rigen He; Shuai Wang; Ke Jin; Hongbin Bei; Kazuhiro Yasuda; Syo Matsumura; Kenji Higashida; Ian M. Robertson

doi:10.1016/j.scriptamat.2016.07.023

Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation

Mo Rigen He, Shuai Wang, Ke Jin, Hongbin Bei, Kazuhiro Yasuda, Syo Matsumura, Kenji Higashida, Ian M. Robertson^*

^*Corresponding author for this work

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

64 Citations (Scopus)

Abstract

Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. This result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.

Original language	English
Pages (from-to)	5-9
Number of pages	5
Journal	Scripta Materialia
Volume	125
DOIs	https://doi.org/10.1016/j.scriptamat.2016.07.023
Publication status	Published - 1 Dec 2016
Externally published	Yes

Keywords

Concentrated solid solution alloys
Defects
Radiation
Transmission electron microscopy

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10.1016/j.scriptamat.2016.07.023

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title = "Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation",

abstract = "Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. This result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.",

keywords = "Concentrated solid solution alloys, Defects, Radiation, Transmission electron microscopy",

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T1 - Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation

AU - He, Mo Rigen

AU - Wang, Shuai

AU - Jin, Ke

AU - Bei, Hongbin

AU - Yasuda, Kazuhiro

AU - Matsumura, Syo

AU - Higashida, Kenji

AU - Robertson, Ian M.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. This result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.

AB - Defect production and growth in CrFeCoNi, a single-phase concentrated solid solution alloy, is characterized using in situ electron irradiation inside a transmission electron microscope operated at 400–1250 kV and 400 °C. All observed defects are interstitial-type, either elliptical Frank loops or polygonal (mostly rhombus) perfect loops. Both forms of loops in CrFeCoNi exhibit a sublinear power law of growth that is > 40 times slower than the linear defect growth in pure Ni. This result shows how compositional complexity impacts the production of Frenkel pairs and the agglomeration of interstitials into loops, and, thus, enhances the radiation tolerance.

KW - Concentrated solid solution alloys

KW - Defects

KW - Radiation

KW - Transmission electron microscopy

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DO - 10.1016/j.scriptamat.2016.07.023

M3 - Article

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VL - 125

SP - 5

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JO - Scripta Materialia

JF - Scripta Materialia

ER -

Enhanced damage resistance and novel defect structure of CrFeCoNi under in situ electron irradiation

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Keywords

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