Abstract: This invention relates to the property of a bonded metal including a forming material of a nickel-titanium alloy and its method of manufacture. This bonded metal property is produced by forming a forged structure to achieve an incorporated integral body through the bonding of the nickel-titanium alloy material onto another material of nickel base alloy. The manufacturing method used to achieve this property involves heating both materials at the point to be bonded in an inert gas atomosphere. The materials are first heated to their melting point and in this state are fused together under high pressure. This forms the forged structure on the portion of the materials so treated.

Abstract: Composite parts of Ni-Ti alloys joined to a different metal have a melt forged structure obtained through the reactive fusion of both metals, initiated by the fusion of at least one metal bordering on the joint interface and the application of pressure; a hot forged structure of Ni-Ti alloy obtained through softening the alloy at high temperature and applying pressure on the Ni-Ti alloy side of the joint; and a hot forged structure of the different metal obtained by softening the metal at high temperature and applying pressure on the different metal side of the joint.

Abstract: Composite parts of Ni-Ti alloys joined to a different metal have a melt forged structure obtained through the reactive fusion of both metals, initiated by the fusion of at least one metal bordering on the joint interface and the application of pressure; a hot forged structure of Ni-Ti alloy obtained through softening the alloy at high temperature and applying pressure on the Ni-Ti alloy side of the joint; and a hot forged structure of the different metal obtained by softening the metal at high temperature and applying pressure on the different metal side of the joint.