Shape memory thin round wires produced by the in rotating water melt-spinning technique

Microstructure and phase transformation of Ni-Mn-Ga wires produced by the in rotating water melt-spinning technique

“…Ni 55 Mn 20.6 Ga 24.4 (at%) ferromagnetic memory alloy ingot was prepared by vacuum arc remelting (VAR) of high purity elements. Ni 55 Mn 20.6 Ga 24 wires were obtained by INROWASP, which was similar to that previously reported in Refs [10,16]. The process was summarized briefly here.…”

“…The Taylor-Ulitovsky method often led to the trouble of removing glass sheath while the film-like shape wires fabricated by most of melt spun wires usually limit the application of Ni-Mn-Ga alloys, especially about Ni-Mn-Ga/polymer composites [6][7][8][9][10][11][12][13][14][15]. In rotating water melt-spinning (INROWASP) technique can achieve wires thin round shape [16]. Moreover, the microstructure and phase transformation of this thin round shape Ni-Mn-Ga wires have not been thoroughly investigated, and these are of great importance in the properties and application of Ni-Mn-Ga alloys.…”

Mechanical and magnetic behavior of oligocrystalline Ni–Mn–Ga microwires

“…Melt spinning [14][15][16][17] and the Taylor method [18][19][20] have been used to fabricate Ni-Mn-Ga wires or ribbons. A bamboo grain structure was achieved, with a melt spun wire, via annealing at 1100 °C for 2 h [9].…”

Shape memory and superelasticity in polycrystalline Cu–Al–Ni microwires

“…2 exhibits repeatable superelastic strains of a magnitude ͑from 2.9% to 4.3%͒ three to four times higher than bulk polycrystalline Cu-Al-Ni materials ͑which usually achieve less than 1% without fracture͒. 12,19 These large strains are achieved despite the fact that, with a gauge length over 6 mm, the wire comprises many dozens of individual grains. Shown in Fig.…”