Significance of slip propensity determination in shape memory alloys

Piyas Chowdhury; Huseyin Sehitoglu

doi:10.1016/j.scriptamat.2016.03.017

Significance of slip propensity determination in shape memory alloys

Piyas Chowdhury, Huseyin Sehitoglu

Mechanical Science and Engineering

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

Abstract

Performance degradation in a shape memory alloy (SMA) occurs due to dislocation activities at any stage of its thermo-mechanical deformation history. Knowing the physical energy barriers to activate slip could prove instrumental in devising strategies to engineer superior resistance thereto. Given the multi-elements, the SMA slip propensity is intrinsically decided by inherent bonding landscapes. In essence, the problem of theorizing SMA slipping tendency reduces to a quantum mechanical one. Consequently, atomistic calculations can provide invaluable experimentally verifiable material trend as well as potentially pave the way for advancing novel SMAs.

Original language	English (US)
Pages (from-to)	82-87
Number of pages	6
Journal	Scripta Materialia
Volume	119
DOIs	https://doi.org/10.1016/j.scriptamat.2016.03.017
State	Published - Jul 1 2016

Keywords

Atomistic model
Density functional theory
Dislocation
Generalized stacking fault energy
Shape memory alloy

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Online availability

10.1016/j.scriptamat.2016.03.017

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title = "Significance of slip propensity determination in shape memory alloys",

abstract = "Performance degradation in a shape memory alloy (SMA) occurs due to dislocation activities at any stage of its thermo-mechanical deformation history. Knowing the physical energy barriers to activate slip could prove instrumental in devising strategies to engineer superior resistance thereto. Given the multi-elements, the SMA slip propensity is intrinsically decided by inherent bonding landscapes. In essence, the problem of theorizing SMA slipping tendency reduces to a quantum mechanical one. Consequently, atomistic calculations can provide invaluable experimentally verifiable material trend as well as potentially pave the way for advancing novel SMAs.",

keywords = "Atomistic model, Density functional theory, Dislocation, Generalized stacking fault energy, Shape memory alloy",

author = "Piyas Chowdhury and Huseyin Sehitoglu",

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AU - Sehitoglu, Huseyin

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Y1 - 2016/7/1

N2 - Performance degradation in a shape memory alloy (SMA) occurs due to dislocation activities at any stage of its thermo-mechanical deformation history. Knowing the physical energy barriers to activate slip could prove instrumental in devising strategies to engineer superior resistance thereto. Given the multi-elements, the SMA slip propensity is intrinsically decided by inherent bonding landscapes. In essence, the problem of theorizing SMA slipping tendency reduces to a quantum mechanical one. Consequently, atomistic calculations can provide invaluable experimentally verifiable material trend as well as potentially pave the way for advancing novel SMAs.

AB - Performance degradation in a shape memory alloy (SMA) occurs due to dislocation activities at any stage of its thermo-mechanical deformation history. Knowing the physical energy barriers to activate slip could prove instrumental in devising strategies to engineer superior resistance thereto. Given the multi-elements, the SMA slip propensity is intrinsically decided by inherent bonding landscapes. In essence, the problem of theorizing SMA slipping tendency reduces to a quantum mechanical one. Consequently, atomistic calculations can provide invaluable experimentally verifiable material trend as well as potentially pave the way for advancing novel SMAs.

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KW - Generalized stacking fault energy

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Significance of slip propensity determination in shape memory alloys

Abstract

Keywords

ASJC Scopus subject areas

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