Preparation method of NiFeGa magnetic memory alloy wires for inhibiting gamma phase distribution

• Main Authors: SUN YUBIN, YANG HAO, DONG GUIFU, LIU HUIZI, JIANG CHUNHUI
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the technical field of memory alloy preparation, and discloses a preparation method of NiFeGa magnetic memory alloy wires for inhibiting gamma phase distribution. With nickelpieces with the purity of 99.99%, pure iron pieces with the purity of 99.95% and gallium with the purity of 99.9999% as raw materials, samples are prepared by an induction smelting furnace under an argon protective atmosphere; raw materials of the NiFeGa magnetic memory alloy wires are obtained; the raw materials are rod type cylinders; the rod type cylinders of the raw materials are forged by a high-temperature mold to obtain rods with diameters of phi 4 mm; and the raw materials of the obtained phi 4 mm rods of the NiFeGa magnetic memory alloy wires are ultrasonically dried to prepare the NiFeGa magnetic memory alloy wires by a linear stepper motor. The excellent shape memory effect of the alloy wires is maintained during improvement of the block alloy brittleness; and the preparation method inhibits distributio