PURPOSE: To obtain an amorphous Mg alloy free from embrittlement even after heating at high temp. and having high strength and heat resistance by specifying a composition consisting of Mg, M(La, Ce, Mm, Y), Al, X(Ni, Cu), and Z(Mn, Zn, Zr, Ti).
CONSTITUTION: This alloy is an amorphous Mg alloy having a composition represented by MgaMbAlcXdZe (where a=70 to 90% by atom, b=2 to 15%, c=1 to 9%, d=2 to 15%, e=0.1 to 8%, and a+b+c+d+e=100%), and further, this alloy has high strength and heat resistance and has practical utility. This amorphous Mg alloy can be obtained, e.g., by spraying a molten Mg alloy with prescribed composition through a small hole, bringing it into contact with the surface of a rapidly rotating roll made of copper, and forming it into an alloy foil by means of rapid solidification.
INOUE AKIHISA
KATO AKIRA
SHIBATA TOSHISUKE
YAMAGUCHI HITOSHI
TOYOTA MOTOR CORP
YOSHIDA KOGYO KK
TEIKOKU PISTON RING CO LTD