Aluminum alloy products, and methods of making the same

Patent metadata

Field	Value
Publication number	US-2017120386-A1
Application number	US-201615366691-A
Country	US
Kind code	A1
Filing date	Dec 1, 2016
Priority date	Mar 12, 2015
Publication date	May 4, 2017
Grant date	—

Abstract

The present disclosure relates to aluminum-based products having 1-30 vol. % of a ceramic phase. The aluminum alloy products may be produced via additive manufacturing techniques to facilitate production of the aluminum-based products having the 1-30 vol. % of the ceramic phase.

First claim

What is claimed is:

1 . A method for producing an aluminum-based product, the method comprising:
(a) dispersing a metal powder in a bed, wherein the metal powder comprises ceramic-metal particles, wherein the ceramic-metal particles include a ceramic material dispersed within an aluminum material; (b) selectively heating a portion of the metal powder to a temperature above the liquidus temperature of the aluminum material; (c) forming a molten pool; and (d) cooling the molten pool at a cooling rate of at least 1000° C. per second; (e) repeating steps (a)-(d) until the aluminum-based product is completed, wherein the aluminum-based product comprises one or more ceramic phases, and wherein the aluminum-based product comprises 1-30 vol. % of the one or more ceramic phases dispersed within an aluminum-based matrix.

2 . The method of claim 1 , wherein the aluminum material of the ceramic-metal particles is a 2xxx aluminum alloy or an 8xxx aluminum alloy.

3 . The method of claim 2 , wherein the ceramic material of the ceramic-metal particles is at least one of TiB 2 , TiC, SiC, Al 2 O 3 , BC, BN, and Si 3 N 4 .

4 . The method of claim 2 , wherein the ceramic-metal particles consist essentially of the 2xxx or 8xxx aluminum alloy and the ceramic phase.

5 . The method of claim 2 , wherein the ceramic-metal particles consist essentially of aluminum alloy 2519 and TiB 2 .

6 . The method of claim 2 , wherein the ceramic-metal particles consist essentially of (a) aluminum alloy 8009 or 8019 and (b) TiB 2 .

7 . The method of claim 2 , wherein the ceramic-metal particles comprise a homogenous distribution of the ceramic material within the 2xxx or 8xxx aluminum alloy.

8 . The method of claim 1 , wherein the aluminum-based product comprises a homogenous distribution of the ceramic phase within a 2xxx or 8xxx aluminum alloy matrix.

9 . The method of claim 1 , wherein the powder comprises the ceramic-metal particles and further comprises at least one of (i) metal particles and (ii) ceramic particles.

10 . A method for producing an aluminum-based product, the method comprising:
(a) dispersing a metal powder in a bed, wherein the metal powder comprises first metal particles and second metal particles, wherein the first metal particles comprise metallic aluminum or an aluminum alloy, and wherein the second metal particles comprise a ceramic; (b) selectively heating a portion of the metal powder to a temperature above the liquidus temperature of the metallic aluminum or the aluminum alloy; (c) forming a molten pool; and (d) cooling the molten pool at a cooling rate of at least 1000° C. per second; (e) repeating steps (a)-(d) until the aluminum-based product is completed, wherein the aluminum-based product comprises one or more ceramic phases, and wherein the aluminum-based product comprises 1-30 vol. % of the one or more ceramic phases dispersed within an aluminum-based matrix.

11 . The method for claim 10 , wherein the first metal particles consist essentially of aluminum or an aluminum alloy.

12 . The method for claim 11 , wherein the second metal particles are selected from the group consisting of ceramic particles, ceramic-metal particles, metal particles, and combinations thereof, wherein at least one of the ceramic particles and the ceramic-metal particles are present in the second metal particles.

13 . The method of claim 12 , wherein the second metal particles comprise at least one of TiB 2 , TiC, SiC, Al 2 O 3 , BC, BN, and Si 3 N 4 ceramic particles.

14 . The method of claim 12 , wherein the second metal particles are TiB 2 ceramic particles.

15 . 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;
(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, and wherein the second metal powder comprises at least one of ceramic particles and ceramic-metal particles;
(i) wherein the second producing step comprises using additive manufacturing to make the second region of the aluminum alloy product;
(ii) wherein the second region is adjacent the first region; and
(iii) wherein the second region comprises one or more ceramic phases, and wherein the second region comprises at least 1 vol. % of the one or more ceramic phases.

16 . The method of claim 15 , wherein the first region consists essentially of metallic aluminum.

17 . The method of claim 15 , wherein the first region consists essentially of an aluminum alloy.

18 . The method of any of claim 16 , wherein the one or more ceramic phases comprise at least one of TiB 2 , TiC, SiC, Al 2 O 3 , BC, BN, and Si 3 N 4 .

19 . The method of any of claim 17 , wherein the one or more ceramic phases comprise at least one of TiB 2 , TiC, SiC, Al 2 O 3 , BC, BN, and Si 3 N 4 .

20 . The method of claim 19 , wherein the one or more ceramic phases include TiB 2 .

Assignees

• Arconic Inc

Inventors

• Lin Jen C
• Karabin Lynnette M
• Yanar Cagatay
• Heard David W

Classifications

• B22F10/34

  of powder characteristics, e.g. density, oxidation or flowability · CPC title

• B23K26/342 Primary

  Build-up welding · CPC title

• B22F10/28 Primary

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B22F7/06 Primary

  of composite workpieces or articles from parts, e.g. to form tipped tools {(B22F7/002 takes precedence)} · CPC title

• B22F10/25

  Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title