4D printing has grown tremendously in the last decade, enabling functional structures made of smart materials to be manufactured. Current metal research focused on thermal shape memory alloys (SMAs) and a lesser extent magnetic SMAs. This review assesses progress Ni–Mn–Ga, highlighting key challenges opportunities for applications. The mechanism SMAs influence process parameters microstructure ...

Abstract In this paper, we report on mechanical properties observed during bending experiments conducted quinary Ni–Mn–Ga–Co–Cu melt-spun ribbons. Depending the ribbon’s side to which force is applied, different response noted. Substantially larger instabilities are when applied “free side” than “wheel of When latter, much lower fluctuations recorded and amplitude force–displacement remains wit...

The porosity and hydrogen storage properties of the dehydrated Prussian blue type solids Ga[Co(CN)6], Fe4[Fe(CN)6]3, M2[Fe(CN)6] (M = Mn, Co, Ni, Cu), and Co3[Co(CN)5]2 are reported and compared to those of M3[Co(CN)6]2 (M = Mn, Fe, Co, Ni, Cu, Zn). Nitrogen sorption measurements suggest partial framework collapse for M2[Fe(CN)6] (M = Co, Ni) and Co3[Co(CN)5]2, and complete collapse for Mn2[Fe(...

The influence of Co and Cu doping on Ni-Mn-Ga alloy is investigated using the first-principles exact muffin-tin orbital method in combination with the coherent-potential approximation. The energy difference between the austenite (A) and the nonmodulated (NM) martensite ΔEA-NM depends linearly on the Cu concentration and distribution, with a minimum for all Cu at Mn sites and a maximum for all C...