THIN STRIP OF ULTRA-QUICKLY COOLED NICKEL-TITANIUM ALLOY AND ITS PRODUCTION

摘要

PURPOSE:To produce a continuous thin strip of an ultra-quickly cooled Ni-Ti alloy by cooling ultra-quickly a molten Ni-Ti alloy with the surface of cooling rolls while bringing the same into thorough contact with a rare gas element such as He, Ne, Ar, Xe or the like. CONSTITUTION:A molten Ni-Ti alloy is ultra-quickly cooled at about 105-106 deg.C/ sec with the surface of cooling rolls of a single or double roll method, etc. and is brought into thorough contact with at least one kind of rare gas elements among He, Ne, Ar, Xe, etc. by which the long-sized continuous thin strip of the ultra-quickly cooled Ni-Ti alloy contg. the above-mentioned rare gas element is obtd. The thin alloy strip which has the compsn. consisting of {Ni0.48-0.52 Ti0.52- 0.48}99.99-95X0.01-5 (X; =1 kind of rare gas elements, the figure is the atom% of the alloy) and has a good shape memory effect and hydrogen occluding effect is obtd. by using the alloy contg. about 48-52atom% Ni and about 52-48% Ti and the above-mentioned method.