Computer simulation of hydride precipitation in bi-crystalline zirconium

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

Computer simulation of hydride precipitation in bi-crystalline zirconium

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

Research output: Contribution to journal › Conference article › peer-review

Abstract

γ-hydride precipitation and growth in a zirconium bi-crystal were simulated using a phase field kinetic model. 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. The morphology evolution of γ-hydride with and without external load was simulated. 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.

Original language	English (US)
Pages (from-to)	AA4.14.1-AA4.14.5
Journal	Materials Research Society Symposium - Proceedings
Volume	677
State	Published - 2001
Event	Advances in Materials Therory and Modeling - Bridging Over Multiple Length and Time Scales - San Francisco, CA, United States Duration: Apr 16 2001 → Apr 20 2001

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@article{b1a6a5fe329140bc907ddc46d0aa5353,

title = "Computer simulation of hydride precipitation in bi-crystalline zirconium",

abstract = "γ-hydride precipitation and growth in a zirconium bi-crystal were simulated using a phase field kinetic model. 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. The morphology evolution of γ-hydride with and without external load was simulated. 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.",

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 and Woo, from Hong Kong Polytechnic University (G-V851) for Ma, and from the U.S. National Science Foundation (DMR 96-33719) for Chen.; Advances in Materials Therory and Modeling - Bridging Over Multiple Length and Time Scales ; Conference date: 16-04-2001 Through 20-04-2001",

year = "2001",

language = "English (US)",

volume = "677",

pages = "AA4.14.1--AA4.14.5",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

}

TY - JOUR

T1 - Computer simulation of hydride precipitation in bi-crystalline zirconium

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 and Woo, from Hong Kong Polytechnic University (G-V851) for Ma, and from the U.S. National Science Foundation (DMR 96-33719) for Chen.

PY - 2001

Y1 - 2001

N2 - γ-hydride precipitation and growth in a zirconium bi-crystal were simulated using a phase field kinetic model. 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. The morphology evolution of γ-hydride with and without external load was simulated. 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.

AB - γ-hydride precipitation and growth in a zirconium bi-crystal were simulated using a phase field kinetic model. 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. The morphology evolution of γ-hydride with and without external load was simulated. 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.

UR - http://www.scopus.com/inward/record.url?scp=0035559062&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035559062&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0035559062

SN - 0272-9172

VL - 677

SP - AA4.14.1-AA4.14.5

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Advances in Materials Therory and Modeling - Bridging Over Multiple Length and Time Scales

Y2 - 16 April 2001 through 20 April 2001

ER -

Computer simulation of hydride precipitation in bi-crystalline zirconium

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this