Aluminum alloy composition and heat treatment method of the aluminum alloy composition

Patent metadata

Field	Value
Publication number	US-2016130686-A1
Application number	US-201614991722-A
Country	US
Kind code	A1
Filing date	Jan 8, 2016
Priority date	Oct 5, 2012
Publication date	May 12, 2016
Grant date	—

Abstract

Disclosed herein is an aluminum alloy composition and a method of heat treating the aluminum alloy, to improve process control and strength of the aluminum alloy for a rear safety plate mounted on a truck, etc., complying with safety regulations wherein the aluminum alloy composition includes Silicon (Si) about 0.8 to 1.3% by weight, Iron (Fe) up to about 0.5% by weight, Copper (Cu) about 0.15 to 0.4% by weight, Manganese (Mn) up to about 0.15% by weight, Magnesium (Mg) about 0.8 to 1.2% by weight, Chromium (Cr) up to about 0.25% by weight, Zinc (Zn) up to about 0.2% by weight, Titanium (Ti) up to about 0.1% by weight and the remaining percent by weight of Aluminum (Al) of the entire composition.

First claim

1 - 3 . (canceled)

4 . A heat treatment method of an aluminum alloy composition, comprising:
heat treating the aluminum alloy; and after heat treating the aluminum alloy, age heat treating the aluminum alloy at about 205° C. to 215° C. for 4 to 5 hours.

5 . The heat treatment method of claim 4 , wherein the aluminum alloy composition comprises Silicon (Si) about 0.8 to 1.3% by weight, Iron (Fe) up to about 0.5% by weight, Copper (Cu) about 0.15 to 0.4% by weight, Manganese (Mn) up to about 0.15% by weight, Magnesium (Mg) about 0.8 to 1.2% by weight, Chromium (Cr) up to about 0.25% by weight, Zinc (Zn) up to about 0.2% by weight, Titanium (Ti) up to about 0.1% by weight and the remaining percent by weight of Aluminum (Al) of the entire composition.

6 . The heat treatment method of claim 5 , wherein the aluminum alloy composition further comprises Beryllium (Be) and Zirconium (Zr).

7 . The heat treatment method of claim 6 , wherein the Beryllium (Be) is about 0.04 to 0.07% by weight and the Zirconium (Zr) is about 0.2 to 0.3% by weight of the entire composition.

8 . The heat treatment method of claim 4 , further comprising: age heat treating the aluminum alloy at 210° C. for 5 hours.

9 . A heat treatment method of claim 4 , further comprising: solution heat treating the aluminum alloy at about 520° C. to 560° C. for 1.5 to 2.5 hours.

10 . The heat treatment method of claim 9 , further comprising: solution heat treating the aluminum alloy at 540° C. for 2 hours.

11 . (canceled)

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Nak-Young

Classifications

• C22F1/047

  of alloys with magnesium as the next major constituent · CPC title

• C22C21/08 Primary

  with silicon · CPC title

• C22F1/043

  of alloys with silicon as the next major constituent · CPC title

• C22F1/05

  of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions · CPC title

• C22C21/02

  with silicon as the next major constituent · CPC title