# US 2019/0376166 A1 · Aluminium alloys for structural and non-structural near net casting, and methods for producing same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2019/0376166 A1
- Document ID: US20190376166A1
- Status: Published application
- Kind: A1
- Application number: 16/464,530
- Filed: 2017-11-27
- Published: 2019-12-12
- Earliest claimed: 2016-11-28
- Assignees: McMaster University
- Applicants: Mcmaster University
- Inventors: Sumanth SHANKAR; Xiaochun ZENG
- Web page: https://patentgrep.com/patent/US20190376166A1

## CPC

- C22C 21/10: with zinc as the next major constituent
- C22F 1/053: of alloys with zinc as the next major constituent
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)

## Abstract

An aluminum alloy for near net shaped casting of structural components is disclosed. The alloy contains 2 to 10 wt. % Zn, 0.5 to 5 wt. % Mg, 0.5 to 5 wt. %) Fe, optionally Cu, Ti, Sr, Be, Zr, V, Cr, Sc, Na, Si, Mn, Mo, B, and Ni, with balance aluminum. The alloy may be subjected to heat treatment selected from the group consisting of solutionizing, incubation, aging, and two or more heat treatment steps.

## Claims

### Claim 1

(canceled)

### Claim 2

An aluminum alloy consisting of:
from 2 to 10 wt. % zinc (Zn);
from 0.5 to 5 wt. % magnesium (Mg);
from 0.5 to 5 wt. % iron (Fe), wherein aluminum (Al), as well as, other elements and impurities make up the balance wt. %.

### Claim 3

An aluminum alloy comprising:
from 4 to 10 wt. % zinc (Zn);
from 1.5 to 3 wt. % magnesium (Mg);
from 1.5 to 3 wt. % iron (Fe); and,
inevitable impurities.

### Claim 4

An aluminum alloy comprising:
from 4.5 to 7 wt. % zinc (Zn);
from 2 to 2.5 wt. % magnesium (Mg);
from 1.5 to 4 wt. % iron (Fe); and,
inevitable impurities.

### Claim 5

An aluminum alloy comprising:
from 4.7 to 6.9 wt. % zinc (Zn);
from 2.1 to 2.24 wt. % magnesium (Mg);
from 1.56 to 3.78 wt. % iron (Fe);
from 0.05 to 0.38 wt. % copper (Cu);
from 0.02 to 0.24 wt. % manganese (Mn); and,
inevitable impurities.

### Claim 6

An aluminum alloy consisting of:
zinc at 2 to 10 percentage by weight;
magnesium at 0.5 to 5 percentage by weight;
iron at 0.5 to 5 percentage by weight;
copper at 0 to 4 percentage by weight;
manganese at 0 to 1 percentage by weight;
titanium at 0 to 0.5 percentage by weight;
boron at 0 to 0.15 percentage by weight;
zirconium at 0 to 0.5 percentage by weight;
vanadium at 0 to 0.5 percentage by weight;
scandium at 0 to 0.5 percentage by weight;
chromium at 0 to 0.5 percentage by weight;
strontium at 0 to 0.1 percentage by weight;
sodium at 0 to 0.1 percentage by weight;
boron at 0 to 0.5 percentage by weight; and,
beryllium at 0 to 0.2 percentage by weight.

### Claim 7 (depends on 1)

An aluminum alloy as claimed in claim 1 which has been subject to heat treatment which is one or more members of the group consisting of solution only, incubation only, age only, no treatment or two or more heat treatment steps together.

### Claim 8 (depends on 1)

The aluminum alloy of claim 1 which has been heat-treated by one of:
one step solutionizing at 460° C. for 3.5 hours to 24 hours with cold water quench;
two steps solutionizing at 450° C. for 12 to 22 hours plus 5 to 30° C. per hour to 475 to 500° C. plus 475 to 500° C. for 4 to 7 hours with cold water quench;
incubation between solution and ageing for 1 to 24 hours at room temperature;
one step ageing at 120 to 170° C. for 1 to 24 hours; and,
two step ageing at 120° C. for 1 to 24 hours plus 150 to 180° C. for 1 to 24 hours.