Aluminum iron silicon alloys having optimized properties

Patent metadata

Field	Value
Publication number	US-2019093198-A1
Application number	US-201816156265-A
Country	US
Kind code	A1
Filing date	Oct 10, 2018
Priority date	Sep 26, 2017
Publication date	Mar 28, 2019
Grant date	—

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 comprising:
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.

2 . The alloy of claim 1 , wherein x is between about 0.01 and about 0.1.

3 . 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.

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

5 . The alloy of claim 3 , wherein the additive is carbon.

6 . The alloy of claim 3 , wherein the additive is sulfur.

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

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

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

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

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

12 . The alloy of claim 10 , wherein the additive is selected from the group consisting of zirconium, niobium, hafnium, tantalum, tungsten, and combinations thereof.

13 . The alloy of claim 10 , wherein the additive is zirconium.

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 at least 0.2 at %.

15 . 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 %.

16 . The alloy of claim 1 , wherein the additive is combined with the aluminum, the iron, and the silicon using solid-state processing.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Liu Zhongyi
• Haddad Daad B
• Swartz Julie A

Classifications

• C22C30/00

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

• C22C21/00 Primary

  Alloys based on aluminium · CPC title