Thermally induced reorientation and plastic deformation of B19' monoclinic martensite in nanocrystalline NiTi wires

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00570230" target="_blank" >RIV/68378271:_____/23:00570230 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.actamat.2022.118477" target="_blank" >https://doi.org/10.1016/j.actamat.2022.118477</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.actamat.2022.118477" target="_blank" >10.1016/j.actamat.2022.118477</a>

Result language
angličtina
Original language name
Thermally induced reorientation and plastic deformation of B19' monoclinic martensite in nanocrystalline NiTi wires
Original language description
Functional behavior of nanocrystalline NiTi shape memory wires having various austenitic microstructures was investigated by thermomechanical testing and TEM analysis of martensite microstructures in deformed wires. Three phenomena are reported and discussed in this work. First, martensitic NiTi wire heated under low applied stresses elongates several percent before it shortens during reverse martensitic transformation due to thermally induced martensite reorientation proceeding via motion of interfaces between (001) compound twin domains in the microstructure. Second, martensite stabilization by deformation is not caused by plastic deformation and lattice defects introduced by deformation but that it is due to change of martensite variant microstructures in polycrystal grains during the reorientation process. Finally, generation of unrecovered plastic strains and dislocation defects accompanies all martensitic transformation/reorientation/detwinning processes in NiTi.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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