Process for working metal material and structures

Details Process for working metal material and structures Process for working metal material and structures

2011-04-05

2011-04-05

Stoner, Kiley (Department: 1735)

Metal fusion bonding

Process

Using dynamic frictional energy

C228S230000

Reexamination Certificate

active

07918379

ABSTRACT:
In a first step, friction stir welding is performed, while supplying a filler into a joining portion, in order to prevent the coarsening of crystal grains of metal materials in a subsequent fusion processing. Then, a fusion processing such as MIG welding is performed. The filler to be added to the joining portion includes a substance that does not chemically react with the metal materials and has a melting point higher than a melting point of the metal materials and a substance in which a misfit with the metal materials is within ±15%. As a result, the coarsening of crystal grains by the fusion processing is inhibited and the joint strength can be increased.

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