| 摘要 |
PURPOSE:To obtain the titled alloy having improved machinability without deteriorating the hot workability by adding a specified amount of Be to an alloy having a specificed composition constituting of Ni, Cu, Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn, Ge an Fe. CONSTITUTION:The machinability of an Ni-Fe-Cu alloy contg. much Cu is improved without deteriorating the hot workability or reducing the initial permeability by adding 0.001-0.5wt% Be to the alloy consisting of 57-74wt% Ni, 12-32wt% Cu, 12-32wt% Cu, <=10wt% at least one among Ti, Zr, V, Nb, Ta, Cr, Mo, W, Mn and Ge, and the balance Fe to obtain a free-cutting magnetic alloy. Be improves the machinability by improving the crushability of shavings when added by said amount, yet >0.5% Be does not remarkably improve the machinability furthermore and deteriorates remarkably the permeability.
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