Processing

Please wait...

Settings

Settings

Goto Application

1. WO2016141326 - MACRO-CHIP REINFORCED ALLOY

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

CLAIMS

WHAT IS CLAIMED IS:

1. A powder blend comprising:

a first component comprising a blend of a first metal particle and a first ceramic particle; and

a second component comprising a reinforcing chip, the reinforcing chip comprising a second ceramic particle dispersed within a chip metal matrix.

2. The powder blend according to claim 1, wherein the first component and the second component are present in a weight ratio ranging from about 100: 1 to about 2: 1.

3. The powder blend according to any one of claims 1 to 2, wherein the first ceramic particle and the second ceramic particle are formed from the same material.

4. The powder blend according to any one of claims 1 to 2, wherein the first ceramic particle and the second ceramic particle are formed from different materials.

5. The powder blend according to any one of claims 1 to 4, wherein the first ceramic particle and the second ceramic particle are each independently selected from the group consisting of alumina, titanium carbide, silicon carbide, tungsten carbide, boron carbide, and mixtures thereof.

6. The powder blend according to anyone of claims 1 to 5, wherein the first metal particle and the chip metal matrix are formed from the same material.

7. The powder blend according to anyone of claims I to 5, wherein the first metal particle and the chip metal matrix are formed from different materials.

8. The powder blend according to any one of claims 1 to 7, wherein the first metal particle and the chip metal matrix are each independently selected from the group consisting of pure aluminum, an aluminum alloy, steel, a nickel alloy, a titanium alloy, and combinations thereof.

9. The powder blend according to any one of claims I to 8, wherein the reinforcing chip has a height to width aspect ratio ranging from about 1 :3 to about 1 : 1.25.

10. The powder blend according to any one of claims 1 to % wherein the reinforcing chip has a height to thickness aspect ratio ranging from about 2: 1 to about 10: 1.

11. The powder biend according to any one of claims 1 to 10, wherein the al!oy chips have a width ranging from about 2.0 nun to about 10.0 mm.

12. The powder blend according to any one of claims 1 to 11, wherein the alloy chips have a thickness ranging from about 0.1 mm to about 1.0 mm.

13. The powder blend according to any one of claims I to 12, wherein the first ceramic particle and the second ceramic particle each have a particle distribution of 100% less than about 250 μm.

14. The powder biend according to any one of claims 1 to 13, wherein the first metal particle has a d50 ranging from about 1 pm to about 20 μm.

15. The powder blend according to any one of claims 1 to 14, wherein the first metal particle is an aluminum particle and has a natural oxide formation layer having a thickness ranging from about 3 nm to about 7 nm.

16. The powder blend according to any one of claims 1 to 15, wherein the first ceramic particle and the first metal particle are present in a weight ratio ranging from about 1:15 to about 1:7.

17. A method of forming a neutron shielding material comprising:

a) mixing together a first metal particle having a first grain growth temperature; a first ceramic particle; and a reinforcing chip to form a powder blend; and b) processing the powder blend at a hot-work temperature;

wherein the reinforcing chip comprises a second ceramic particle dispersed within a chip metal matrix having a second grain growth temperature; and

wherein the hot-work temperature is lower than both of the first and second grain growth temperatures.

18. The method according to claim 17, wherein the hot-work temperature is less than about 1100 °F

19. The method according to any one of claims 17 to 18, wherein the reinforcing chip is present in a non-zero amount ranging up to about 35 wt. % based on the total weight of the powder blend.

20. The method according to any one of claims 17 to 19, wherein the processing of step b) comprises vacuum sintering the powder blend into a billet and subsequently extruding the billet into a sheet material.