Patent ID: 8486330

Claim:
A Zr—Ti—Ni—Cu quaternary alloy composition, expressed as: Zr a Ti b Ni c Cu d Formula 2 where a, b, c and d denote atomic % of Zr, Ti, Ni and Cu respectively; 48≦a≦60; 20≦b≦28; 19≦c+d≦30; 3≦d≦12; and 0.12≦d/(c+d)≦0.5, wherein constituent phase of the alloy composition at room temperature includes three phases, which are Zr 2 Ni phase with Cu dissolved therein, (Zr,Ti) 2 Ni phase with Cu dissolved therein, and Zr(Ti) solid solution phase with Cu dissolved therein, or which are Zr 2 Cu phase with Ni dissolved therein, (Zr,Ti) 2 Ni phase with Cu dissolved therein, and Zr(Ti) solid solution phase with Cu dissolved therein.