| 摘要 |
An AB5 type age-precipitating rare earth metal-nickel alloy having a composition expressed by (1): R(Ni1-xMx)5+y where R represents one or more of rare-earth elements including Y, M represents one or more selected from a group of Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, W, and B and x and y respectively satisfy the relations 0.05 </= x </= 0.5 and -0.45 </= y </= 0.45. The alloy has a precipitated phase of 0.1-20 mu m in average major axis. A raw alloy material having the composition expressed by formula (1) is subjected to a solid solution treatment at above 1000 DEG C, and aged for a period of time t which satisfies the relation (2): (830-T)/200 </= log t </= (1,200-T)/200 at a temperature T ( DEG C) of >/= 700 DEG C and < 1,000 DEG C so as to produce the precipitated phase having an average major axis of 0.1-20 mu m. <IMAGE> |
