Ni-Mn-Ga magnetic shape memory alloy (SMA) micro-trusses, suitable for high magnetic field induced strains and/or a large magnetocaloric effect, are created via a new additive manufacturing method combining (i) 3D-printing of ~400 mm struts with an ink containing a polymer binder and elemental Ni, Mn, and Ga powders, (ii) binder burn-out and metallic powder interdiffusion and homogenization to ...

The off-stoichiometric Ni(2)MnGa Heusler alloy is a magnetic shape-memory alloy capable of reversible magnetic-field-induced strains (MFIS). These are generated by twin boundaries moving under the influence of an internal stress produced by a magnetic field through the magnetocrystalline anisotropy. While MFIS are very large (up to 10%) for monocrystalline Ni-Mn-Ga, they are near zero (<0.01%) ...

This study investigates the impact of alloying Mn-Al-Ga with 3 at.-% Ni and stability formation mechanisms τ phase resulting magnetic properties. The stabilizing effect Ga on was verified, ternary alloy’s magnetization measured up to M2T=482kA/m−1. transformation from γ2 in demonstrated microscopically. solubility limit into exceeded at a primitive cubic κ formed. addition stabilized phase. hig...