Grain size and grain boundary effects on hydrogen induced nanovoid nucleation in polycrystalline Ni

L. Wang; J. Zhou; S. Zhang

doi:10.1179/1432891714Z.000000000531

Grain size and grain boundary effects on hydrogen induced nanovoid nucleation in polycrystalline Ni

L. Wang, J. Zhou, S. Zhang

能源科学与工程学院

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

A theoretical model was developed to study the effects of grain boundary (GB) structure and grain size on nucleation of nanovoid in the presence of hydrogen in polycrystalline Ni. The nanovoid nucleation rate at low angle grain boundary (LAGB) increases with decreasing the grain size as well as increasing the hydrogen concentration. The microstructure with high fraction of LAGBs shows the lower fraction of nanovoid, thus enhances the ductility and fracture toughness of materials.

源语言	英语
页（从-至）	S2591-S2594
期刊	Materials Research Innovations
卷	18
DOI	https://doi.org/10.1179/1432891714Z.000000000531
出版状态	已出版 - 1 5月 2014

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abstract = "A theoretical model was developed to study the effects of grain boundary (GB) structure and grain size on nucleation of nanovoid in the presence of hydrogen in polycrystalline Ni. The nanovoid nucleation rate at low angle grain boundary (LAGB) increases with decreasing the grain size as well as increasing the hydrogen concentration. The microstructure with high fraction of LAGBs shows the lower fraction of nanovoid, thus enhances the ductility and fracture toughness of materials.",

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AU - Wang, L.

AU - Zhou, J.

AU - Zhang, S.

PY - 2014/5/1

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N2 - A theoretical model was developed to study the effects of grain boundary (GB) structure and grain size on nucleation of nanovoid in the presence of hydrogen in polycrystalline Ni. The nanovoid nucleation rate at low angle grain boundary (LAGB) increases with decreasing the grain size as well as increasing the hydrogen concentration. The microstructure with high fraction of LAGBs shows the lower fraction of nanovoid, thus enhances the ductility and fracture toughness of materials.

AB - A theoretical model was developed to study the effects of grain boundary (GB) structure and grain size on nucleation of nanovoid in the presence of hydrogen in polycrystalline Ni. The nanovoid nucleation rate at low angle grain boundary (LAGB) increases with decreasing the grain size as well as increasing the hydrogen concentration. The microstructure with high fraction of LAGBs shows the lower fraction of nanovoid, thus enhances the ductility and fracture toughness of materials.

KW - Grain boundary

KW - Hydrogen

KW - Nanovoid

KW - Polycrystalline materials

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VL - 18

SP - S2591-S2594

JO - Materials Research Innovations

JF - Materials Research Innovations

ER -

Grain size and grain boundary effects on hydrogen induced nanovoid nucleation in polycrystalline Ni

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