The effect of Fe addition on the transformation temperatures, lattice parameter and magnetization saturation of Ni52.5−XMn23Ga24.5FeX ferromagnetic shape memory alloy

Effect of selective substitution of Co for Ni or Mn on the superstructure and microstructural properties of Ni50Mn29Ga21

“…Considerable strain deformation and large recovery ratio have been observed in polycrystalline Ni 53.5 Mn 26.0 Ga 20.5 alloy that crystallizes in 7 M monoclinic structure with magneto-structural transformation, owing to low residual stresses and multimode twinning [22]. Recent Electron Backscatter Diffraction (EBSD) studies report further insight into the orientation relations between twin variants in Ni 50 Mn 28 Many recent studies on quasi-ternary Ni-Mn-Ga-X alloys have been directed at the selective partial substitution of 3d elements, Co and Fe [6,[24][25][26][27][28]. Substitution of Co for Ni causes an increase Table 1 Chemical composition from EDAX, electron per atom ratio, martensitic start (Ms), martensitic finish (M f ), austenite start (As) and austenite finish (A f ), martensitic transformation temperature (TM = (Ms + M f + As + A f )/4) and Curie temperature (TC) of Co-doped alloys currently studied.…”

Determining the liquidus and ordering temperatures of the ternary NiMn-Ga and quaternary Ni-Mn-Ga-Fe/Cu alloys

“…It is well known that the crystal structures, properties and transformation temperatures of the martensites in the ternary alloys may vary considerably with their chemical composition [see, e.g., 2,3, 4,5,6,7]. These properties can be influenced also by quaternary alloying [e.g., 8,9,10,11,12,13,14,15,16]. Fe-alloying has been shown to improve the ductility of the alloys and there are working MSM alloys, as well as polycrystalline high temperature shape memory alloys in this group [9].…”

Effect of niobium addition on the martensitic transformation and magnetocaloric effect in low hysteresis NiCoMnSn magnetic shape memory alloys

“…Many investigations have been conducted on the effect of 3d transition-metal doping on the structural phase transitions, magnetic, and magnetocaloric characteristics of Ni-Mn-Sn based MSMAs. [27][28][29][30][31][32][33] However, the effect of 4d-transition-metal substitution has not yet been widely a)…”