Additive Manufacturing of Ni-Mn-Cu-Ga: Influence of Sintering Temperature on Magnetocaloric Effect and Microstructure

Additive Manufacturing from the Point of View of Materials Research

“…In 2013, [204] used selective laser melting to create heat exchangers from La(Fe, Co, Si) 13 . Meanwhile, [137,139,147,148,150] conducted experiments with Ni-Mn-based Heusler alloys fabricated using L-DED and powder bed binder jet 3D printing. L-DED, with a laser as the energy source, required a heat treatment to homogenize the microstructure before promising properties were observed [147,148].…”

“…L-DED, with a laser as the energy source, required a heat treatment to homogenize the microstructure before promising properties were observed [147,148]. Binder jet printing, since it requires no heat input that would change the feedstock powder's microstructure, showed a magnetocaloric response in the as-sintered state [150] [133]. used inkjet printing to deposit a mixture containing elemental Ni, Mn, and Ga powders, then sintered them to create final lattice structures with 73-75% porosity in the micro-trusses.…”