Aluminum alloy products, and methods of making the same

Patent metadata

Field	Value
Publication number	US-2017014937-A1
Application number	US-201615279026-A
Country	US
Kind code	A1
Filing date	Sep 28, 2016
Priority date	Mar 12, 2015
Publication date	Jan 19, 2017
Grant date	—

Abstract

The present disclosure relates to new metal powders for use in additive manufacturing, and aluminum alloy products made from such metal powders via additive manufacturing. The composition(s) and/or physical properties of the metal powders may be tailored. In turn, additive manufacturing may be used to produce a tailored aluminum alloy product.

First claim

What is claimed is:

1 . A method for producing an aluminum alloy product, the method comprising:
(a) dispersing a metal powder in a bed, wherein the metal powder comprises first metal particles and second metal particles, and wherein the first metal particles comprise aluminum and wherein the second metal particles comprise a metal other than aluminum, wherein the second metal particles comprise a different composition than the first metal particles, wherein the first metal particles have a first tailored particle size distribution, wherein the second metal particles have a second tailored particle size distribution, wherein the first tailored particle size distribution is different than the second tailored particle size distribution; (b) selectively heating a portion of the metal powder to a temperature above the liquidus temperature of the aluminum alloy product; (c) forming a molten pool; (d) cooling the molten pool at a cooling rate of at least 1000° C. per second; and (e) repeating steps (a)-(d) until the aluminum alloy product is completed.

2 . The method for claim 1 , wherein the first metal particles are first one-metal particles, and wherein the first one-metal particles consist essentially of aluminum.

3 . The method for claim 2 , wherein the second metal particles are second one-metal particles, wherein the second one-metal particles consistent essentially of a metal other than aluminum.

4 . The method of claim 2 , wherein the second one-metal particles consist essentially of a metal selected from the group consisting of, copper, manganese, silicon, magnesium, zinc, iron, titanium, zirconium, chromium, nickel, tin, silver, vanadium, and a rare earth element.

5 . The method of claim 1 , wherein the first metal particles are first multiple-metal particles, wherein the first multiple-metal particles comprise aluminum and at least one other metal.

6 . The method of claim 5 , wherein the first multiple-metal particles consist of an aluminum alloy.

7 . The method of claim 5 , wherein the first multiple-metal particles consist of an aluminum alloy, wherein the aluminum alloy is selected from the group consisting of the 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx, and 8xxx aluminum alloys.

8 . The method of claim 2 , wherein the second metal particles are metal-nonmetal particles.

9 . The method of claim 8 , wherein the metal-nonmetal particles comprise at least one of oxygen, carbon, nitrogen and boron.

10 . The method of claim 9 , wherein the metal-nonmetal particles are selected from the group consisting of metal oxide particles, metal carbide particles, metal nitride particles, and combinations thereof.

11 . The method of claim 9 , wherein the metal-nonmetal particles are one of Al 2 O 3 , TiC, Si 3 N 4 and TiB 2 .

12 . The method of claim 2 , wherein the second metal particles are non-metal particles.

13 . A method of making an aluminum alloy product, the method comprising:
(a) first producing a first region of an aluminum alloy body via a first metal powder, wherein the first metal powder comprises aluminum;
(i) wherein the first producing step comprises using additive manufacturing to make the first region of the aluminum alloy product, wherein the first producing step comprises heating the first metal powder using a single radiation source;
(b) second producing a second region of an aluminum alloy body via a second metal powder, wherein the first metal powder is different than the second metal powder;
(i) wherein the second producing step comprises using additive manufacturing to make the second region of the aluminum alloy product, wherein the second producing step comprises heating the second metal powder using the single radiation source;
(ii) wherein the second region is adjacent the first region.

14 . The method of claim 13 , wherein the first metal powder comprise metal particles, wherein the metal particles comprise aluminum, and wherein the metal particles are selected from the group consisting of first one-metal particles, first multiple-metal particles, first metal-nonmetal particles, and combinations thereof.

15 . The method of claim 14 , wherein the second metal powder comprises second one-metal particles, wherein the second one-metal particles consistent essentially of a metal other than aluminum.

16 . The method of claim 15 , wherein the second metal powder further comprises multiple-metal particles.

17 . The method of claim 15 , wherein the second metal powder further comprises metal-nonmetal particles.

18 . The method of claim 13 , wherein the second metal powder comprises non-metal particles.

19 . A wire for use in electron beam or plasma arc additive manufacturing, the wire comprising:
an outer tube portion; and a volume of particles contained within the outer tube portion;
wherein the outer tube portion is a 1xxx aluminum alloy, and
wherein the volume of particles contained within the outer tube portion is selected from the group consisting of one-metal particles, multiple metal particles, metal-nonmetal particles, non-metal particles, and combinations thereof.

20 . A method comprising:
using the wire of claim 19 to produce an aluminum alloy product, wherein the using comprises using electron beam or plasma arc additive manufacturing.

Assignees

• Alcoa Inc

Inventors

• Wilhelmy Deborah M
• Karabin Lynnette M
• Yanar Cagatay
• Siemon John
• Kilmer Raymond J
• Heard David W
• Satoh Gen

Classifications

• B23K35/368

  Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials · CPC title

• B23K35/361

  Alumina or aluminates · CPC title

• B23K35/0261

  Rods, electrodes or wires · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B23K15/0086

  welding for purposes other than joining, e.g. build-up welding · CPC title