Abstract
	Intermetallic compound containing approx. 50 at.% Ni and 50  at. % Ti is considered as standard shape memory alloy. The basic requirement to metallurgy of these advanced materials is strict adherence to chemical composition of the alloy, which is the main condition for obtaining of the alloy with the required transformation temperatures. At use plasma melting, material is placed into copper water-cooled mold. This is drifted by bolt under plasma burner. Argon is used as plasma forming gas. For the melting as such it is necessary to use the cleanest available argon due to high affinity of titanium to oxygen. Plasma temperature achieves at this method of melting 6500 K. Chemical homogeneity can be achieved at vacuum induction melting. Material of crucible has at this method the principal influence on quality of ingot. Crucibles made of Al2O3 and MgO cannot be used due to oxygen content. Oxygen contained in graphite crucible can be neglected, it is, however, necessary to take into account absorption of carbon. Ni-Ti based alloys are usually melted at the temperature of approx. 1500 °C. For obtaining of wire it is best to use technology of swaging in combination with subsequent drawing. Aim of hot forming consists in change of casting structure and achievement of satisfactory grain size that is suitable for subsequent cold drawing. This article deals with preparation of Ni-Ti shape memory alloys in plasma furnace and vacuum induction furnace. The swaging and drawing were carried out to produce wires which will be used for measurement of transformation temperatures.