Publication detail
Elastic Constants of Austenitic and Martensitic Phases of NiTi Shape Memory Alloy
ŠESTÁK, P. ČERNÝ, M. POKLUDA, J.
Czech title
Elastické konstanty austenitické a martenzitické fáze slitiny NiTi
English title
Elastic Constants of Austenitic and Martensitic Phases of NiTi Shape Memory Alloy
Type
conference paper
Language
en
Original abstract
NiTi shape memory alloys start to be widely used in mechatronic systems. In this article, theoretical elastic constants of austenitic and martensitic phases of perfect NiTi crystals and martensitic crystals containing twins in compound twinning mode are presented as computed by using first principles methods. The comparison of elastic constants of the twinned NiTi martensite with those for perfect crystals helps us to understand the transition from elastic to pseudoplastic behavior of NiTi alloys. The results indicate that the elastic response is not influenced by the presence of the twins.
Czech abstract
NiTi slitina se stala v mechantronice velice používaným materiálem. V této práci jsou prezentovány hodnoty elastických konstant ideálního austenitu a martenzitu společně s martenzitem obsahující smíšené dvojčatění typu (100). Data byla spočtena užitím ab-inito metod. Porovnání elastických konstant ideálního martenzitu se zdvojčatělým martenzitem rošiřuje současné poznání pseudoelastického chování NiTi slitiny. Výsledky ukazují, že přítomnost dvojčete typu (100) nemá významný vliv na mechanické vlastnosti.
English abstract
NiTi shape memory alloys start to be widely used in mechatronic systems. In this article, theoretical elastic constants of austenitic and martensitic phases of perfect NiTi crystals and martensitic crystals containing twins in compound twinning mode are presented as computed by using first principles methods. The comparison of elastic constants of the twinned NiTi martensite with those for perfect crystals helps us to understand the transition from elastic to pseudoplastic behavior of NiTi alloys. The results indicate that the elastic response is not influenced by the presence of the twins.
Keywords in English
NiTi, twinning, shape memory, ab-initio, elastic constants
RIV year
2009
Released
30.10.2009
Publisher
Springer
Location
Berlin
ISBN
978-3-642-05021-3
Book
Recent Advances in Mechatronics 2008-2009
Edition number
1
Pages from–to
1–6
Pages count
6
BIBTEX
@inproceedings{BUT29179,
author="Petr {Šesták} and Miroslav {Černý} and Jaroslav {Pokluda},
title="Elastic Constants of Austenitic and Martensitic Phases of NiTi Shape Memory Alloy",
booktitle="Recent Advances in Mechatronics 2008-2009",
year="2009",
month="October",
pages="1--6",
publisher="Springer",
address="Berlin",
isbn="978-3-642-05021-3"
}