Publication detail
The Influence of Twinning in B19 Martensitic Structure of NiTi Alloy on Mechanical Properties from First Principles
ŠESTÁK, P. ČERNÝ, M. POKLUDA, J.
Czech title
Vliv dvojčatění v martensitické struktuře B19 slitiny NiTi na mechanické vlastnosti z prvních principů.
English title
The Influence of Twinning in B19 Martensitic Structure of NiTi Alloy on Mechanical Properties from First Principles
Type
conference paper
Language
en
Original abstract
The NiTi alloy (Nitinol) has became very important material in last years mainly owing to its shape memory effect which is connected with martensitic transformation from martensitic B19 to austenitic B2 structure and vice versa. The aim of this work is the study of (100) compound twinning mode in B19 martensitic structure of NiTi alloy and its influence on elastic moduli Cij. The computed results show that the studied twinning mode does not have a significant influence to the elastic constant Cij. There is only little decreasing of constant C44 and C66 in system contains twins. The published results can help us to understand of the effect of compound twinning in NiTi shape memory alloy on mechanical properties at the atomic scale.
Czech abstract
The NiTi alloy (Nitinol) has became very important material in last years mainly owing to its shape memory effect which is connected with martensitic transformation from martensitic B19 to austenitic B2 structure and vice versa. The aim of this work is the study of (100) compound twinning mode in B19 martensitic structure of NiTi alloy and its influence on elastic moduli Cij. The computed results show that the studied twinning mode does not have a significant influence to the elastic constant Cij. There is only little decreasing of constant C44 and C66 in system contains twins. The published results can help us to understand of the effect of compound twinning in NiTi shape memory alloy on mechanical properties at the atomic scale.
English abstract
The NiTi alloy (Nitinol) has became very important material in last years mainly owing to its shape memory effect which is connected with martensitic transformation from martensitic B19 to austenitic B2 structure and vice versa. The aim of this work is the study of (100) compound twinning mode in B19 martensitic structure of NiTi alloy and its influence on elastic moduli Cij. The computed results show that the studied twinning mode does not have a significant influence to the elastic constant Cij. There is only little decreasing of constant C44 and C66 in system contains twins. The published results can help us to understand of the effect of compound twinning in NiTi shape memory alloy on mechanical properties at the atomic scale.
Keywords in Czech
ab-initio výpočty, elastické constanty, dvojčatění, B19, NiTi, Nitinol, slitina s tvarovou pamětí
Keywords in English
first principles calculations, elastic constants, twinning, B19, NiTi, Nitinol, shape memory alloy.
RIV year
2008
Released
01.09.2008
Publisher
VUTIUM
Location
Brno
ISBN
9781617823190
Book
Multilevel Approach to Fracture of Materials, Components and Structures (ECF17)
Pages from–to
2511–2516
Pages count
6
BIBTEX
@inproceedings{BUT26888,
author="Petr {Šesták} and Miroslav {Černý} and Jaroslav {Pokluda},
title="The Influence of Twinning in B19 Martensitic Structure of NiTi Alloy on Mechanical Properties from First Principles",
booktitle="Multilevel Approach to Fracture of Materials, Components and Structures (ECF17)",
year="2008",
month="September",
pages="2511--2516",
publisher="VUTIUM",
address="Brno",
isbn="9781617823190"
}