Open AccessIntermartensitic transformation of Ni-Fe-Ga magnetic shape memory alloys
Author(s) -
Hongxing Zheng,
Jian Liu,
Mingxu Xia,
Jianguo Li
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.1719
Subject(s) - diffusionless transformation , materials science , shape memory alloy , monoclinic crystal system , transformation (genetics) , differential scanning calorimetry , magnetic shape memory alloy , diffraction , martensite , thermodynamics , condensed matter physics , crystallography , microstructure , metallurgy , magnetic field , crystal structure , magnetization , optics , magnetic domain , chemistry , physics , biochemistry , quantum mechanics , gene
Differential scanning calorimetry (DSC) and x-ray diffraction (XRD) have been used to probe the martensitic transformation behaviors of Ni-Fe-Ga magnetic shape memory alloys. A complete intermartensitic transformation was observed in polycrystallineNi56556.5Fe19019.0Ga2452 4.5和Ni56356.3Fe17017.0Ga2672 6.7 alloys, which is stimulated by the change of temperature and include s an intermartensitic transformation and the corresponding retransformation. The intermartensitic transformation and the martensitic transformation are both the rmoelastic and the martensitic phases existing at room temperature are character ized as a monoclinic 14M structure.