Weld nugget inoculation

Details Weld nugget inoculation Weld nugget inoculation

2006-12-19

2006-12-19

Wyszomierski, George (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

C228S194000, C228S248100

Reexamination Certificate

active

07150799

ABSTRACT:
A weld nugget between aluminum alloy parts is inoculated with a material in order to refine the grain structure of the weld and thereby improve its mechanical strength. The inoculate may be a Ti or Na based compound in the form of a paste, powder or film, which is applied to the sheets before welding. The inoculation promotes nucleation of desirable equiaxed grain within the molten weld nugget as the weld cools and solidifies.

REFERENCES:
patent: 4038514 (1977-07-01), Ashton
patent: 4943492 (1990-07-01), Holroyd et al.
patent: 6335512 (2002-01-01), Warren et al.
patent: 6410165 (2002-06-01), Warren et al.
patent: 6779707 (2004-08-01), Dracup et al.

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