Aluminum iron silicon alloys having optimized properties

Patent metadata

Field	Value
Publication number	US-11035026-B2
Application number	US-201816156265-A
Country	US
Kind code	B2
Filing date	Oct 10, 2018
Priority date	Sep 26, 2017
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

Al—Fe—Si alloys having optimized properties through the use of additives are disclosed. In some aspects, an alloy includes aluminum in a first amount, iron in a second amount, silicon in a third amount, and an additive in a fourth amount. The additive is selected from the group consisting of a non-metal additive, a transition-metal additive, a rare-metal additive, and combinations thereof. The first amount, the second amount, the third amount, and the fourth amount produce an alloy with a stoichiometric formula (Al 1-x A x ) 3 Fe 2 Si where A is the additive.

First claim

What is claimed is:

1. An alloy consisting of:
aluminum in a first amount;
iron in a second amount;
silicon in a third amount; and
an additive in a fourth amount, the additive selected from the group consisting of a non-metal additive, a transition-metal additive, a rare-metal additive, and combinations thereof;
wherein the first amount, second amount, third amount, and fourth amount produce an alloy with a stoichiometric formula (Al 1-x A x ) 3 Fe 2 Si where A is the additive and x is between about 0.01 and about 0.1;
wherein the additive is combined with the aluminum, the iron, and the silicon using solid-state processing.

2. The alloy of claim 1 , wherein the additive is selected from the group consisting of non-metal elements in groups III to VI and combinations thereof.

3. The alloy of claim 2 , wherein the additive is boron, carbon, sulfur, or arsenic.

4. The alloy of claim 2 , wherein the additive is carbon.

5. The alloy of claim 2 , wherein the additive is sulfur.

6. The alloy of claim 1 , wherein the additive is selected from the group consisting of transition metals.

7. The alloy of claim 6 , wherein the additive is selected from the group consisting of nickel, copper, zinc, palladium, silver, cadmium, and combinations thereof.

8. The alloy of claim 6 , wherein the additive is selected from the group consisting of nickel, copper, zinc, and combinations thereof.

9. The alloy of claim 1 , wherein the additive is selected from the group consisting of rare metals.

10. The alloy of claim 9 , wherein the additive is selected from the group consisting of zirconium, niobium, hafnium, tantalum, tungsten, rutherfordium, dubnium, seaborgium, bohrium, and combinations thereof.

11. The alloy of claim 9 , wherein the additive is selected from the group consisting of zirconium, niobium, hafnium, tantalum, tungsten, and combinations thereof.

12. The alloy of claim 9 , wherein the additive is zirconium.

13. The alloy of claim 1 , wherein, on a basis of all atoms within the alloy, the first amount is from 40 at % to 55 at %, the second amount is from 30 at % to 36 at %, the third amount is from 16 at % to 17 at %, and the fourth amount is from 0.2 at % to about 5 at %.

14. The alloy of claim 1 , wherein, on a basis of all atoms within the alloy, the first amount is between 40 at % and 55 at %, the second amount is between 30 at % and 36 at %, the third amount is between 16 at % and 17 at %, and the fourth amount is between 0.5 at % and 5 at %.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Liu Zhongyi
• Haddad Daad B
• Swartz Julie A

Classifications

• C22C21/00 Primary

  Alloys based on aluminium · CPC title

• C22C30/00

  Alloys containing less than 50% by weight of each constituent · CPC title