Heterogeneous precipitation of niobium carbide in ferrite

Céline Hin; Frédéric Soisson; Philippe Maugis; Yves Bréchet

Heterogeneous precipitation of niobium carbide in ferrite

Céline Hin, Frédéric Soisson, Philippe Maugis, Yves Bréchet

Research output: Contribution to conference › Paper

Abstract

We propose a study of the heterogeneous precipitation of NbC in α-iron by Monte Carlo simulations based on a simple atomic description of the main mechanisms which control the kinetic pathway: - realistic diffusion properties, with a rapid diffusion of C atoms by interstitial jumps and a slower diffusion of Fe and Nb atoms by vacancy jumps - a simple model of dislocation which interacts with solute atoms through local segregation energies and long range elastic field. We study the effect of the supersaturation on the kinetic of precipitation and we show the elastic field associated with the dislocation clearly favored the heterogeneous precipitation of NbC.

Original language	English
Pages	771-776
Number of pages	6
Publication status	Published - 2005
Externally published	Yes
Event	International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005 - Phoenix Arizona USA, Phoenix, United States of America Duration: 29 May 2005 → 3 Jun 2005

Conference

Conference	International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005
Abbreviated title	PTM 2005
Country/Territory	United States of America
City	Phoenix
Period	29/05/05 → 3/06/05

Keywords

Heterogeneous precipitation
Monte Carlo Simulation
Niobium Carbide

Cite this

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title = "Heterogeneous precipitation of niobium carbide in ferrite",

abstract = "We propose a study of the heterogeneous precipitation of NbC in α-iron by Monte Carlo simulations based on a simple atomic description of the main mechanisms which control the kinetic pathway: - realistic diffusion properties, with a rapid diffusion of C atoms by interstitial jumps and a slower diffusion of Fe and Nb atoms by vacancy jumps - a simple model of dislocation which interacts with solute atoms through local segregation energies and long range elastic field. We study the effect of the supersaturation on the kinetic of precipitation and we show the elastic field associated with the dislocation clearly favored the heterogeneous precipitation of NbC.",

keywords = "Heterogeneous precipitation, Monte Carlo Simulation, Niobium Carbide",

author = "C{\'e}line Hin and Fr{\'e}d{\'e}ric Soisson and Philippe Maugis and Yves Br{\'e}chet",

year = "2005",

language = "English",

pages = "771--776",

note = "International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005, PTM 2005 ; Conference date: 29-05-2005 Through 03-06-2005",

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TY - CONF

T1 - Heterogeneous precipitation of niobium carbide in ferrite

AU - Hin, Céline

AU - Soisson, Frédéric

AU - Maugis, Philippe

AU - Bréchet, Yves

PY - 2005

Y1 - 2005

N2 - We propose a study of the heterogeneous precipitation of NbC in α-iron by Monte Carlo simulations based on a simple atomic description of the main mechanisms which control the kinetic pathway: - realistic diffusion properties, with a rapid diffusion of C atoms by interstitial jumps and a slower diffusion of Fe and Nb atoms by vacancy jumps - a simple model of dislocation which interacts with solute atoms through local segregation energies and long range elastic field. We study the effect of the supersaturation on the kinetic of precipitation and we show the elastic field associated with the dislocation clearly favored the heterogeneous precipitation of NbC.

AB - We propose a study of the heterogeneous precipitation of NbC in α-iron by Monte Carlo simulations based on a simple atomic description of the main mechanisms which control the kinetic pathway: - realistic diffusion properties, with a rapid diffusion of C atoms by interstitial jumps and a slower diffusion of Fe and Nb atoms by vacancy jumps - a simple model of dislocation which interacts with solute atoms through local segregation energies and long range elastic field. We study the effect of the supersaturation on the kinetic of precipitation and we show the elastic field associated with the dislocation clearly favored the heterogeneous precipitation of NbC.

KW - Heterogeneous precipitation

KW - Monte Carlo Simulation

KW - Niobium Carbide

UR - http://www.scopus.com/inward/record.url?scp=33645283889&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:33645283889

SP - 771

EP - 776

T2 - International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2005

Y2 - 29 May 2005 through 3 June 2005

ER -

Heterogeneous precipitation of niobium carbide in ferrite

Abstract

Conference

Keywords

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Cite this