| 摘要 |
A hard superconducting alloy consisting of a metal from Groups IVa, Va and VIa of the Periodic Table, together with at least one metal from Groups III, IV, V, VI, VII and VIII is heat treated at a temperature within a multiphase region of the phase diagram for a sufficient time to induce precipitation of a secondary phase and is then quenched to retain that phase. The alloy may also be subjected to a sub-critical magnetic field at or below its critical temperature. Cold working may also be applied prior or subsequent to heat-treatment. Alloys of niobium with 28-33 atomic per cent of zirconium, of zirconium with 25-33 atomic per cent niobium, and of niobium with 12.5 atomic per cent each of titanium and zirconium are particularly referred to. |
