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Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys.

ABSTRACT: A grand challenge in material science is to understand the correlation between intrinsic properties and defect dynamics. Radiation tolerant materials are in great demand for safe operation and advancement of nuclear and aerospace systems. Unlike traditional approaches that rely on microstructural and nanoscale features to mitigate radiation damage, this study demonstrates enhancement of radiation tolerance with the suppression of void formation by two orders magnitude at elevated temperatures in equiatomic single-phase concentrated solid solution alloys, and more importantly, reveals its controlling mechanism through a detailed analysis of the depth distribution of defect clusters and an atomistic computer simulation. The enhanced swelling resistance is attributed to the tailored interstitial defect cluster motion in the alloys from a long-range one-dimensional mode to a short-range three-dimensional mode, which leads to enhanced point defect recombination. The results suggest design criteria for next generation radiation tolerant structural alloys.

SUBMITTER: Lu C

PROVIDER: S-EPMC5171798 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys.

Lu Chenyang C Niu Liangliang L Chen Nanjun N Jin Ke K Yang Taini T Xiu Pengyuan P Zhang Yanwen Y Gao Fei F Bei Hongbin H Shi Shi S He Mo-Rigen MR Robertson Ian M IM Weber William J WJ Wang Lumin L

Nature communications 20161215

A grand challenge in material science is to understand the correlation between intrinsic properties and defect dynamics. Radiation tolerant materials are in great demand for safe operation and advancement of nuclear and aerospace systems. Unlike traditional approaches that rely on microstructural and nanoscale features to mitigate radiation damage, this study demonstrates enhancement of radiation tolerance with the suppression of void formation by two orders magnitude at elevated temperatures in ...[more]

PMID: 27976669

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Dataset Information

Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys.

Publications

Enhancing radiation tolerance by controlling defect mobility and migration pathways in multicomponent single-phase alloys.

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