Publication detail

Elastic Properties of B19' Structure of NiTi Alloy under Uniaxial and Hydrostatic Loading from First Principles

ŠESTÁK, P. ČERNÝ, M. POKLUDA, J.

Czech title

Pružné vlastnosti struktury B19' slitiny NiTi při jednoosém a hydrostatickém zatěžování vypočtené z prvních principů

English title

Elastic Properties of B19' Structure of NiTi Alloy under Uniaxial and Hydrostatic Loading from First Principles

Type

journal article in Web of Science

Language

en

Original abstract

The uniaxial and hydrostatic deformation of martensitic structure B19' of NiTi shape memory alloy is studied using first-principles calculations. The bulk and Young's moduli and the theoretical strength under uniaxial tension and hydrostatic loading are computed from crystal response to applied deformations. The behavior of gamma angle of B19' structure was investigated along the whole deformation path. The computed values of Young's moduli are compared with available experimental results. The results obtained complement and extend the already known characteristics of NiTi alloy.

Czech abstract

Jednoosá a hydrostatická deformace martensitické struktury B19' slitiny NiTi s tvarovou pamětí je studována pomocí ab-initio metod. Hodnoty objemového a Youngova modulu spolu s teoretickou pevností při jednoosém a hydrostatickém namáhání jsou spočteny z deformační odezvy krystalu. Změna úhlu gama structury B19' byla studována podél celé deformační dráhy. Vypočtené hodnoty Youngova modulu jsou srovnány s dostupnými experimentálními daty. Výsledky doplňují a rozšiřují dosud známé charakteristiky slitiny NiTi.

English abstract

The uniaxial and hydrostatic deformation of martensitic structure B19' of NiTi shape memory alloy is studied using first-principles calculations. The bulk and Young's moduli and the theoretical strength under uniaxial tension and hydrostatic loading are computed from crystal response to applied deformations. The behavior of gamma angle of B19' structure was investigated along the whole deformation path. The computed values of Young's moduli are compared with available experimental results. The results obtained complement and extend the already known characteristics of NiTi alloy.

Keywords in Czech

NiTi, B19', slitina s tvarovou pamětí, ab-initio, elastické vlastnosti, teoretická pevnost, jednoosá a hydrostatická deformace

Keywords in English

NiTi, B19', shape memory alloy, first principles, ab-initio, elastic properties, theoretical, strength, uniaxial and hydrostatic deformation

RIV year

2008

Released

16.01.2008

ISSN

0039-2316

Volume

40

Number

1

Pages from–to

12–15

Pages count

4

BIBTEX


@article{BUT45343,
  author="Petr {Šesták} and Miroslav {Černý} and Jaroslav {Pokluda},
  title="Elastic Properties of B19' Structure of NiTi Alloy under Uniaxial and Hydrostatic Loading from First Principles",
  year="2008",
  volume="40",
  number="1",
  month="January",
  pages="12--15",
  issn="0039-2316"
}