Article having a dispersion of ultrafine titanium boride particles in a titanium-base matrix

Patent metadata

Field	Value
Publication number	US-10604452-B2
Application number	US-201313950883-A
Country	US
Kind code	B2
Filing date	Jul 25, 2013
Priority date	Nov 12, 2004
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

An article includes a microscale composite material having a matrix with titanium boride particles configured to form an insert in a metallic mass being comprised of material other than a consolidated titanium-based metallic composition having titanium particles.

First claim

What is claimed is:

1. An article comprising a microscale composite material, the microscale composite material comprising:
a titanium-based matrix;
grains including dispersion of intragranular titanium boride particles at a first volume fraction;
and
additional grains including dispersion of intragranular titanium boride particles at a second volume fraction,
wherein the grains and the additional grains are dispersed together, and the first volume fraction is higher than the second volume fraction, and
wherein the intragranular titanium boride particles are crystallographically orientated relative to the matrix; the intragranular titanium boride particles are coherent or partially coherent with the matrix; and at least 50 volume percent of the intragranular titanium boride particles in the first volume fraction include a maximum dimension of less than 2 micrometers.

2. The article of claim 1 , wherein the micro scale composite material has less than 1.5 percent by weight boron.

3. The article of claim 1 , wherein the micro scale composite material has from about 1.5 percent by weight boron to about 17 weight percent boron.

4. The article of claim 1 , wherein the at least 50 volume percent of the intragranular titanium boride particles have a maximum dimension of less than 1 micrometer.

5. The article of claim 1 , wherein the at least 50 volume percent of the intragranular titanium boride particles have a maximum dimension of less than 0.5 micrometers.

6. The article of claim 1 , wherein at least 90 volume percent of the intragranular titanium boride particles have a maximum dimension of less than 2 micrometers.

7. An article comprising a micro scale composite material, the micro scale composite material comprising:
a titanium-based matrix comprising titanium boride particles, the titanium-based matrix disposed as a macroscopic insert within a metallic mass, wherein the metallic mass is substantially devoid of consolidated titanium-based metallic composition having titanium boride particles, and
wherein at least 50 volume percent of the titanium boride particles include a maximum dimension of less than 2 micrometers.

8. The article of claim 7 , wherein the micro scale composite material has less than 1.5 percent by weight boron.

9. The article of claim 7 , wherein the micro scale composite material has from about 1.5 percent by weight boron to about 17 weight percent boron.

10. The article of claim 7 , wherein the at least 50 volume percent of the titanium boride particles have a maximum dimension of less than 1 micrometer.

11. The article of claim 7 , wherein the at least 50 volume percent of the titanium boride particles have a maximum dimension of less than 0.5 micrometers.

12. The article of claim 7 , wherein at least 90 volume percent of the titanium boride particles have a maximum dimension of less than 2 micrometers.

13. An article comprising:
a first micro scale composite material comprising a titanium-based matrix comprising a first volume fraction of titanium boride particles forming a macroscopic insert; and
a second micro scale composite material comprising a titanium-based matrix comprising a second volume fraction of titanium boride particles, wherein
the macroscopic insert being arranged within the second micro scale composite material, and wherein at least 50 volume percent of the titanium boride particles in the first volume fraction of titanium boride particles include a maximum dimension of less than 2 micrometers.

14. The article of claim 13 , wherein the micro scale composite material has less than 1.5 percent by weight boron.

15. The article of claim 13 , wherein the micro scale composite material has from about 1.5 percent by weight boron to about 17 weight percent boron.

16. The article of claim 13 , wherein the at least 50 volume percent of the titanium boride particles in the first volume fraction of titanium boride particles have a maximum dimension of less than 1 micrometer.

17. The article of claim 13 , wherein the at least 50 volume percent of the titanium boride particles in first volume fraction of titanium boride particles have a maximum dimension of less than 0.5 micrometers.

18. The article of claim 13 , wherein at least 90 volume percent of the titanium boride particles in the first volume fraction of titanium boride particles have a maximum dimension of less than 2 micrometers.

Assignees

• Gen Electric

Inventors

• Woodfield Andrew Philip
• Ott Eric Allen
• Shamblen Clifford Earl

Classifications

• Y10T428/12806

  Refractory [Group IVB, VB, or VIB] metal-base component · CPC title

• C22C14/00

  Alloys based on titanium · CPC title

• C04B35/58071 Primary

  based on titanium borides · CPC title

• B22F2999/00

  Aspects linked to processes or compositions used in powder metallurgy · CPC title

• B22F3/10

  Sintering only · CPC title