Property of bonded metal, including forming material of nickel-titatium alloy, and the method of manufacturing the same
AssigneesMasunaga Menlo Park Co., Ltd., Furukawa Electric Co., Ltd.
InventorSatoru Masunaga
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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.
Claims14
A bonded nickel-titanium and nickel base alloy metal comprising:
- a forged structure formed on respective bonding portions of a forming metal of nickel-titanium alloy and a forming metal of a different kind of nickel base alloy, and
- wherein both of the forming metals are bonded by forge welding.
A method of manufacturing a bonded nickel-titanium and nickel base alloy metal comprising the steps of:
- using metal of nickel-titanium alloy whose nickel content is 40-60% and whose titanium content is 60-40%;
- bonding contacting portions of said nickel-titanium alloy and a metal of nickel base alloy in an inert atmosphere by;
- forming a radiator-like device in the proximity of the contacting portions of both of the metals;
- rapidly heating contacting portions of said metals to a temperature close to the melting point of nickel while the contacting portions are temporarily kept in a heat-melt condition;
- pressing together the metals by high pressure within the very short time while a local plastic flow is simultaneously generated in the contacting portions;
- and
- rapidly decreasing the temperature of the contacting portions by heat radiation through said radiator-like device, whereby
- a forged structure is formed on the pressed contacting portions and both the forming metals are integrally bonded metallurgically.
Dependencies are inferred from the claim text.