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Joining method

  • US 4,606,778 A
  • Filed: 10/26/1984
  • Issued: 08/19/1986
  • Est. Priority Date: 11/03/1983
  • Status: Expired due to Fees
First Claim
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1. A joining method for producing a component from two or more constructional elements made of a metallic material, in particular of an oxide dispersion-hardened alloy based on nickel or iron, which comprises;

  • heat-treating the constructional elements before being joined to produce a coarse-grained oriented structure, inserting a metallic interlayer between the constructional elements which were heat-treated to produce a coarse-grained oriented structure to form a joining zone of interlayer with surfaces of the two constructional elements, said metallic interlayer manufactured from the same oxide disperison-hardened alloy as the constructional elements and having during joining the same extrusion direction as the constructional elements, and further having a plastic fine-grained recrystallizable structure, joining the assembly of heat-treated constructional elements having a coarse-grained, oriented structure with the inserted interlayer having a plastic fine-grained recrystallizable structure by heating at a temperature between 800°

    -1100°

    C. and a pressure of 1 through 200 Pa to effect deformation with a fine-grained growth of the interlayer below 1 μ

    m, and subjecting the resultant component formed from the constructional elements to a heat treatment to effect oriented recrystallization over the joining zone.

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