Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load

X. Q. Ma; S. Q. Shi; C. H. Woo; L. Q. Chen

doi:10.1016/S0921-5093(01)01770-1

Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load

X. Q. Ma, S. Q. Shi, C. H. Woo, L. Q. Chen

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

27 Scopus citations

Abstract

The morphology evolution of γ-hydride precipitation and growth in a zirconium bi-crystal was simulated using a phase field kinetic model. The effects of grain boundary and uniformly applied load were studied. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg-Landau equations for the structural variables and the Cahn-Hilliard diffusion equation for the concentration variable. It is demonstrated that nucleation density of the hydride at the grain boundary increases as compared to the bulk and favorable hydride precipitation at the grain boundary become weaker when an external load is applied. The result also showed that hydrides will grow in those habit planes that are near the perpendicular direction of the applied tensile load.

Original language	English (US)
Pages (from-to)	6-10
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	334
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(01)01770-1
State	Published - Sep 1 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S0921-5093(01)01770-1

Cite this

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title = "Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load",

abstract = "The morphology evolution of γ-hydride precipitation and growth in a zirconium bi-crystal was simulated using a phase field kinetic model. The effects of grain boundary and uniformly applied load were studied. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg-Landau equations for the structural variables and the Cahn-Hilliard diffusion equation for the concentration variable. It is demonstrated that nucleation density of the hydride at the grain boundary increases as compared to the bulk and favorable hydride precipitation at the grain boundary become weaker when an external load is applied. The result also showed that hydrides will grow in those habit planes that are near the perpendicular direction of the applied tensile load.",

author = "Ma, {X. Q.} and Shi, {S. Q.} and Woo, {C. H.} and Chen, {L. Q.}",

note = "Funding Information: This work was supported by grants from the Research Grants Council of Hong Kong (B-Q411) for Shi, Woo and Chen, and from Hong Kong Polytechnic University (G-V851) for Ma, and from the US National Science Foundation (DMR 96-33719) for Chen.",

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doi = "10.1016/S0921-5093(01)01770-1",

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TY - JOUR

T1 - Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load

AU - Ma, X. Q.

AU - Shi, S. Q.

AU - Woo, C. H.

AU - Chen, L. Q.

N1 - Funding Information: This work was supported by grants from the Research Grants Council of Hong Kong (B-Q411) for Shi, Woo and Chen, and from Hong Kong Polytechnic University (G-V851) for Ma, and from the US National Science Foundation (DMR 96-33719) for Chen.

PY - 2002/9/1

Y1 - 2002/9/1

N2 - The morphology evolution of γ-hydride precipitation and growth in a zirconium bi-crystal was simulated using a phase field kinetic model. The effects of grain boundary and uniformly applied load were studied. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg-Landau equations for the structural variables and the Cahn-Hilliard diffusion equation for the concentration variable. It is demonstrated that nucleation density of the hydride at the grain boundary increases as compared to the bulk and favorable hydride precipitation at the grain boundary become weaker when an external load is applied. The result also showed that hydrides will grow in those habit planes that are near the perpendicular direction of the applied tensile load.

AB - The morphology evolution of γ-hydride precipitation and growth in a zirconium bi-crystal was simulated using a phase field kinetic model. The effects of grain boundary and uniformly applied load were studied. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg-Landau equations for the structural variables and the Cahn-Hilliard diffusion equation for the concentration variable. It is demonstrated that nucleation density of the hydride at the grain boundary increases as compared to the bulk and favorable hydride precipitation at the grain boundary become weaker when an external load is applied. The result also showed that hydrides will grow in those habit planes that are near the perpendicular direction of the applied tensile load.

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JO - Materials Science and Engineering: A

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ER -

Simulation of γ-hydride precipitation in bi-crystalline zirconium under uniformly applied load

Abstract

All Science Journal Classification (ASJC) codes

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