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

School of energy science and engineering

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

1 Scopus citations

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.

Original language	English
Pages (from-to)	S2591-S2594
Journal	Materials Research Innovations
Volume	18
DOIs	https://doi.org/10.1179/1432891714Z.000000000531
State	Published - 1 May 2014

Keywords

Grain boundary
Hydrogen
Nanovoid
Polycrystalline materials

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10.1179/1432891714Z.000000000531

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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.",

keywords = "Grain boundary, Hydrogen, Nanovoid, Polycrystalline 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

Abstract

Keywords

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