PURPOSE: To develop a Ti series amorphous alloy having a supercooled soln. range with a wide temp. width and excellent in strength by adding a specified amt. of Fe, Co or the like to a Ti-Cu-Ni series alloy having a specified compsn. and rapidly solidifying it from the molten state.
CONSTITUTION: The molten metal of a Ti alloy having a compsn. expressed by the formula; Ti100-X-Y-ZCuXNiYMZ (wherein M denotes one or two kinds of Fe and Co, and as for X, Y and Z, by atomic %, 5≤X≤40, 0≤Y≤40, 2≤Z≤40 and 30≤X+Y+Z≤70) is melted in an atmosphere of an inert gas such as Ar and is sprayed on the surface of a roll made of Cu rotating at a high speed, which is rapidly cooled and solidified to form a Ti alloy thin film having an amorphous structure on the surface of a roll made of Cu. Thus, the objective amorphous Ti series alloy having high strength of ≥1200MPa and a wide supercooled soln. range of ≥50°C can be obtd.
INOUE AKIHISA
AMITANI KENJI
NISHIYAMA NOBUYUKI
YOSHII ISAMU
INOE AKIHISA
UNITIKA LTD
TEIKOKU PISTON RING CO LTD
Next Patent: TI SERIES AMORPHOUS ALLOY