A multiscale study of hot-extruded CoNiGa ferromagnetic shape-memory alloys

0560792 - FZÚ 2023 RIV GB eng J - Článek v odborném periodiku
Samothrakitis, Stavros - Larsen, Camilla B. - Woracek, R. - Heller, Luděk - Kopeček, Jaromír - Gerstein, G. - Maier, H. J. - Rameš, Michal - Tovar, M. - Šittner, Petr - Schmidt, S. - Štrobl, M.
A multiscale study of hot-extruded CoNiGa ferromagnetic shape-memory alloys.
Materials and Design. Roč. 196, č. 11 (2020), č. článku 109118. ISSN 0264-1275. E-ISSN 1873-4197
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT(CZ) LM2018096; GA ČR GA19-09882S
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: martensitic transformation * hot-extrusion * Laue three-dimensional neutron diffraction to-mography * neutron diffraction tomography
Obor OECD: Materials engineering
Impakt faktor: 7.991, rok: 2020
Způsob publikování: Open access

Ferromagnetic shape-memory CoNiGa alloys have attracted much scientific interest due to their potential alternative use as high-temperature shape-memory alloys, bearing a high prospect for actuation and damping applications at elevated temperatures. Yet, polycrystalline CoNiGa, due to strong orientation dependence of transformation strains, suffers from intergranular fracture. Here, two multi-grain CoNiGa samples were prepared by a novel hot extrusion process that can promote favourable grain-boundary orientation distribution and improve the material's mechanical behaviour. The samples were investigated by multiple methods and their micro structural, magnetic, and mechanical properties are reported.
Trvalý link: https://hdl.handle.net/11104/0333580