IP Library › Granted Patent US 12,428,707
Granted Patent B2
US 12,428,707 · App. 18/437,109 · Granted Sep 30, 2025

Structural die cast aluminum alloys

Inventors: Alan Luo (Columbus, OH); Emre Cinkilic (Columbus, OH); Michael Moodispaw (Columbus, OH)
Assignee: Ohio State Innovation Foundation
C22C21/02C22C1/026C22F1/043
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Quick Facts
Patent No.
US 12,428,707
App. No.
18/437,109
Granted
Sep 30, 2025
Kind
B2
Abstract

Disclosed are aluminum alloys with high iron content and methods of making and using.

Claims (23)

1. An aluminum alloy comprising:

aluminum;

silicon;

from greater than 0.3% by weight to 1% by weight iron, based on the total weight of the aluminum alloy;

from 0.1% by weight to 1.3% by weight manganese, based on the total weight of the aluminum alloy; and

from 0.005% by weight (50 ppm) to 0.018% by weight (180 ppm) strontium, based on the total weight of the aluminum alloy.

2. The aluminum alloy of claim 1 , wherein the manganese is present in amount effective to suppress the formation of a β-Al 5 FeSi phase during casting of the aluminum alloy.

3. The aluminum alloy of claim 1 , wherein the iron and manganese are present in an iron to manganese ratio of from 1.6:1 to 2.6:1.

4. The aluminum alloy of claim 1 , wherein the iron and the manganese are present in an iron to manganese ratio of 1:1 or less.

5. The aluminum alloy of claim 4 , wherein the iron to manganese ratio is from 0.6:1 to 1:1.

6. The aluminum alloy of claim 1 , wherein, the iron to manganese ratio is from 0.7:1 to 0.8:1.

7. The aluminum alloy of claim 1 , wherein the iron and the manganese are present in an iron to manganese ratio of at least 1.6:1.

8. The aluminum alloy of claim 1 , wherein the silicon is present in an amount of from 5% by weight to 12% by weight, based on the total weight of the aluminum alloy.

9. The aluminum alloy of claim 1 , wherein the aluminum alloy further comprises from 0.1% by weight to 0.5% by weight magnesium, based on the total weight of the aluminum alloy.

10. The aluminum alloy of claim 1 , wherein the aluminum alloy further comprises from greater than 0% by weight to 0.5% by weight copper, based on the total weight of the aluminum alloy.

11. The aluminum alloy of claim 1 , wherein the aluminum alloy comprises 0.005% by weight (50 ppm) to 0.015% by weight (150 ppm) strontium, based on the total weight of the aluminum alloy.

12. The aluminum alloy of claim 1 , wherein the aluminum alloy comprises 0.005% by weight (50 ppm) to 0.01% by weight (100 ppm) strontium, based on the total weight of the aluminum alloy.

13. The aluminum alloy of claim 1 , wherein the aluminum alloy comprises 0.006% by weight (60 ppm) to 0.009% by weight (90 ppm) strontium, based on the total weight of the aluminum alloy.

14. The aluminum alloy of claim 1 , wherein the aluminum alloy comprises 0.008% by weight (80 ppm) strontium, based on the total weight of the aluminum alloy.

15. The aluminum alloy of claim 1 , wherein the aluminum alloy comprises 0.10% by weight to 0.60% by weight manganese, based on the total weight of the aluminum alloy.

16. The aluminum alloy of claim 14 , wherein the aluminum alloy comprises manganese at 0.22% based on the total weight of the aluminum alloy.

17. The aluminum alloy of claim 14 , wherein the aluminum alloy comprises a Fe to Mn ratio of 2:1.

18. The aluminum alloy of claim 1 , wherein the manganese is present in amount effective to suppress the formation of a β-Al 5 FeSi phase to less than 2% during casting of the aluminum alloy.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 16, 2024
From: LUO, ALAN; CINKILIC, EMRE; MOODISPAW, MICHAEL
To: OHIO STATE INNOVATION FOUNDATION
Reel/Frame 068595/0239 →
CONFIRMATORY LICENSE Recorded Mar 5, 2024
From: OHIO STATE UNIVERSITY
To: UNITED STATES DEPARTMENT OF ENERGY
Reel/Frame 066731/0429 →
Continuity (3)
Division 17489038 · Sep 29, 2021
Provisional Application 63085016 · Sep 29, 2020
Related Publication 20250011902A1 · Jan 9, 2025
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