초록 ▼

A golf club head made of a hollow metal comprising a face and a body, wherein at least the face is made of a rapidly solidified Al-based alloy having a high strength, high elasticity and light weight. This golf club head makes it possible to stroke a ball without elastic deformation of its face and

A golf club head made of a hollow metal comprising a face and a body, wherein at least the face is made of a rapidly solidified Al-based alloy having a high strength, high elasticity and light weight. This golf club head makes it possible to stroke a ball without elastic deformation of its face and also to fly the ball farther with the initial speed thereof maintained, by using the Al-based alloy at least in the face. In addition, the use of the Al-based alloy makes it possible to form a large head and a long shaft so that balls can be stroked to fly over a long carry in an accurate direction.

대표청구항 ▼

[ What is claimed is:] [1.] A hollow metal golf club head comprising a face and a body, said golf club head having a volume not less than 220 cc and not greater than 320 cc and a weight not less than 170 g and not greater than 220 g wherein at least said face comprises a rapidly solidified Al-based

[ What is claimed is:] [1.] A hollow metal golf club head comprising a face and a body, said golf club head having a volume not less than 220 cc and not greater than 320 cc and a weight not less than 170 g and not greater than 220 g wherein at least said face comprises a rapidly solidified Al-based alloy exhibiting superplasticity and having a specific strength of not less than 20 Kgf/mm.sup.2 /g/cm.sup.3 and a specific Young's modulus of not less than 2,700 Kgf/mm.sup.2 /g/cm.sup.3, said rapidly solidified Al-based alloy expressed by one of the following general formulae (I) to (IV): EQU Al.sub.a M.sub.1b X.sub.e (I) EQU Al.sub.a M.sub.1(b-c) M.sub.2c X.sub.e (II) EQU Al.sub.a M.sub.1(b-d) M.sub.3d X.sub.e (III) EQU Al.sub.a M.sub.1(b-c-d) M.sub.2c M.sub.3d X.sub.e (IV) rein M, represents at least one element selected from the group consisting of Mn, Fe, Co, Ni, and Mo; M.sub.2 represents at least one element selected from the group consisting of V, Cr, and W; M.sub.3 represents at least one element selected from the group consisting of Li, Ca, Mg, Si, Cu, and Zn; X represents at least one element selected from the group consisting of Nb, Hf, Ta, Y, Zr, Ti, Ag, rare-earth elements and a composite (Mm represents misch metal) of rare-earth elements; and a, b, c, d, and e lie in the following ranges, in atomic percentages: 75.ltoreq.a.ltoreq.97, 0.5.ltoreq.b.ltoreq.15, 0.1.ltoreq.c.ltoreq.5, 0.5.ltoreq.d.ltoreq.5, and 0.5.ltoreq.e.ltoreq.10.