Coherency strain reduction in particles on a substrate as a driving force for solute segregation

Dor Amram; David Barlam; Eugen Rabkin; Roni Z. Shneck

doi:10.1016/j.scriptamat.2016.05.030

Coherency strain reduction in particles on a substrate as a driving force for solute segregation

Dor Amram, David Barlam, Eugen Rabkin, Roni Z. Shneck

Department of Materials Engineering

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

5 Scopus citations

Abstract

It is well-established that solute segregation to interfaces is driven by the reduction of their energy. Here we propose coherency strain energy reduction due to lattice misfit modification at an interphase boundary, as a distinct driving force for segregation. Our experiments with Fe-Au particles on a sapphire substrate, together with finite element method calculations demonstrated that the elastic energy contribution to the total driving force for Au segregation exceeds its interfacial energy counterpart for particles larger than ∼ 10 nm in size.

Original language	English
Pages (from-to)	89-92
Number of pages	4
Journal	Scripta Materialia
Volume	122
DOIs	https://doi.org/10.1016/j.scriptamat.2016.05.030
State	Published - 1 Sep 2016

Keywords

Elastic energy
Finite element analysis
Interface segregation
Iron alloys
Segregation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2016.05.030

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abstract = "It is well-established that solute segregation to interfaces is driven by the reduction of their energy. Here we propose coherency strain energy reduction due to lattice misfit modification at an interphase boundary, as a distinct driving force for segregation. Our experiments with Fe-Au particles on a sapphire substrate, together with finite element method calculations demonstrated that the elastic energy contribution to the total driving force for Au segregation exceeds its interfacial energy counterpart for particles larger than ∼ 10 nm in size.",

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AU - Amram, Dor

AU - Barlam, David

AU - Rabkin, Eugen

AU - Shneck, Roni Z.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - It is well-established that solute segregation to interfaces is driven by the reduction of their energy. Here we propose coherency strain energy reduction due to lattice misfit modification at an interphase boundary, as a distinct driving force for segregation. Our experiments with Fe-Au particles on a sapphire substrate, together with finite element method calculations demonstrated that the elastic energy contribution to the total driving force for Au segregation exceeds its interfacial energy counterpart for particles larger than ∼ 10 nm in size.

AB - It is well-established that solute segregation to interfaces is driven by the reduction of their energy. Here we propose coherency strain energy reduction due to lattice misfit modification at an interphase boundary, as a distinct driving force for segregation. Our experiments with Fe-Au particles on a sapphire substrate, together with finite element method calculations demonstrated that the elastic energy contribution to the total driving force for Au segregation exceeds its interfacial energy counterpart for particles larger than ∼ 10 nm in size.

KW - Elastic energy

KW - Finite element analysis

KW - Interface segregation

KW - Iron alloys

KW - Segregation

UR - http://www.scopus.com/inward/record.url?scp=84971219362&partnerID=8YFLogxK

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EP - 92

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Coherency strain reduction in particles on a substrate as a driving force for solute segregation

Abstract

Keywords

ASJC Scopus subject areas

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