Surface improvement of additively manufactured articles produced with aluminum alloys

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United States of America Patent

PATENT NO 10933497
APP PUB NO 20180345423A1
SERIAL NO

16059595

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Abstract

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A method for improving the surface of an aluminum alloy article includes manufacturing the aluminum alloy article using an additive manufacturing technique, wherein the article as-manufactured includes one or more of cracks, roughness, or porosity at a surface of the article; coating the surface of the aluminum alloy article with a diffusion element, the diffusion element being capable of diffusing at least 0.2 mils into the article; heating the aluminum alloy article coated with the diffusion element to cause the diffusion element to diffuse the at least 0.2 mils into the article, thereby forming a diffusion layer of at least 0.2 mils in thickness comprising both aluminum alloy and diffusion element; and removing the diffusion layer from the aluminum alloy article, whereby upon the removing, a resulting improved surface of the article comprises fewer or smaller cracks, reduced roughness, or reduced porosity.

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Patent Owner(s)

  • HONEYWELL INTERNATIONAL, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Godfrey, Donald G Phoenix, US 55 969
Morris, Mark C Phoenix, US 100 1952
Starr, Steve Scottsdale, US 5 89
Szuromi, Andy Phoenix, US 13 254

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