Spinodal twinning of a deformed crystal

Tae Wook Heo; Yi Wang; Long Qing Chen

doi:10.1080/14786435.2013.868946

Spinodal twinning of a deformed crystal

Tae Wook Heo, Yi Wang, Long Qing Chen

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

5 Scopus citations

Abstract

We propose the possibility of a spinodal mechanism for deformation twinning in addition to the nucleation and growth mechanism assumed in all existing studies of twinning, using the thermodynamic stability analysis of a homogeneously deformed crystal by examining its energy landscape as a function of strain along the twinning direction obtained from first-principles calculations. Twinning occurs continuously owing to thermodynamic instability with respect to twinning at large shear strains, whereas it can only take place through the nucleation and growth mechanism at small shear strains.

Original language	English (US)
Pages (from-to)	888-897
Number of pages	10
Journal	Philosophical Magazine
Volume	94
Issue number	9
DOIs	https://doi.org/10.1080/14786435.2013.868946
State	Published - Mar 24 2014

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1080/14786435.2013.868946

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title = "Spinodal twinning of a deformed crystal",

abstract = "We propose the possibility of a spinodal mechanism for deformation twinning in addition to the nucleation and growth mechanism assumed in all existing studies of twinning, using the thermodynamic stability analysis of a homogeneously deformed crystal by examining its energy landscape as a function of strain along the twinning direction obtained from first-principles calculations. Twinning occurs continuously owing to thermodynamic instability with respect to twinning at large shear strains, whereas it can only take place through the nucleation and growth mechanism at small shear strains.",

author = "Heo, {Tae Wook} and Yi Wang and Chen, {Long Qing}",

note = "Funding Information: This work was funded by the Center for Computational Materials Design (CCMD), a joint National Science Foundation (NSF) Industry/University Cooperative Research Center at Penn State (IIP-1034965) and Georgia Tech (IIP-1034968) and by the National Science Foundation under the Grant No. DMR-0710483.",

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T1 - Spinodal twinning of a deformed crystal

AU - Heo, Tae Wook

AU - Wang, Yi

AU - Chen, Long Qing

N1 - Funding Information: This work was funded by the Center for Computational Materials Design (CCMD), a joint National Science Foundation (NSF) Industry/University Cooperative Research Center at Penn State (IIP-1034965) and Georgia Tech (IIP-1034968) and by the National Science Foundation under the Grant No. DMR-0710483.

PY - 2014/3/24

Y1 - 2014/3/24

N2 - We propose the possibility of a spinodal mechanism for deformation twinning in addition to the nucleation and growth mechanism assumed in all existing studies of twinning, using the thermodynamic stability analysis of a homogeneously deformed crystal by examining its energy landscape as a function of strain along the twinning direction obtained from first-principles calculations. Twinning occurs continuously owing to thermodynamic instability with respect to twinning at large shear strains, whereas it can only take place through the nucleation and growth mechanism at small shear strains.

AB - We propose the possibility of a spinodal mechanism for deformation twinning in addition to the nucleation and growth mechanism assumed in all existing studies of twinning, using the thermodynamic stability analysis of a homogeneously deformed crystal by examining its energy landscape as a function of strain along the twinning direction obtained from first-principles calculations. Twinning occurs continuously owing to thermodynamic instability with respect to twinning at large shear strains, whereas it can only take place through the nucleation and growth mechanism at small shear strains.

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Spinodal twinning of a deformed crystal

Abstract

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