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Improved 6xxx aluminum alloys, and methods for producing the same

A technology of aluminum alloy sheet and aluminum alloy body, which can be used in transportation and packaging, superstructure, vehicle parts, etc., and can solve problems such as increasing alloy strength and improving aluminum alloy.

Inactive Publication Date: 2015-01-14
ARCONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, improving one property of aluminum alloys without degrading the other is difficult to achieve
For example, it is difficult to increase the strength of an alloy without reducing its toughness

Method used

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  • Improved 6xxx aluminum alloys, and methods for producing the same
  • Improved 6xxx aluminum alloys, and methods for producing the same
  • Improved 6xxx aluminum alloys, and methods for producing the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0578] Example 1 - Testing of 6xxx Aluminum Alloys with Copper and Zinc

[0579] A 6xxx aluminum alloy with copper and zinc ("6xxx+Cu+Zn alloy") was direct chill cast into an ingot. This alloy is similar to the alloy disclosed in US Patent No. 6,537,392. The 6xxx+Cu+Zn alloys have the compositions specified in Table 3 below.

[0580] The composition of table 3-6xxx+Cu+Zn aluminum alloys (all values ​​are expressed in weight %)

[0581] Si

Fe

mn

Cu

Mg

Zn

Cr

Ti

other each

other total

margin

0.86

0.12

0.01

0.73

0.89

0.69

0.22

0.02

≤0.05

≤0.15

Al

[0582] After casting, the ingots were homogenized and then hot rolled to an intermediate gauge of 2.0 inches. Divide the 2.0 inch body into five parts, bodies A-E.

[0583] Body A was processed into sheet in a conventional manner by hot rolling a 2.0 inch plate to a second intermediate gauge of 0.505 inch, followed by cold roll...

example 2

[0618] Example 2 - Multilayer Product Tested as Can Stock

[0619] similar to the above Figure 12 method and prepared several multi-layer products including AA3104 as the cladding and AA6013 as the core in the H state. Multilayer products were prepared in the form of two layers (3014-6013) and three layers (3104-6013-3104). The mechanical properties of the multilayer product were tested in the H1x state and after curing of the coating. The results are provided in Table 10 below.

[0620] Table 10 - Mechanical properties of multi-layer products

[0621]

[0622] All multilayered products achieved an improved combination of strength and ductility compared to the standard 3104 alloy product, achieving approximately 17 ksi to 30 ksi increase in TYS (after curing) with similar or better ductility. The 3104 cladding can be used to limit aluminum and oxide pick-up on shrink dies during can manufacturing. The 6013 core can be heat treated during the curing of the coating,...

example 3

[0623] Example 3 - Testing of Alloy 6013

[0624] Aluminum Association alloy 6013 was prepared in a manner similar to Example 1, and its mechanical properties were measured. Alloy 6013 is a zinc-free copper-containing 6xxx alloy. The compositions of the tested 6013 alloys are provided in Table 11 below. Mechanical properties are shown in Figures 27-35.

[0625] Table 11 - Composition of Alloy 6013 (all values ​​are expressed in % by weight)

[0626] Si

Fe

mn

Cu

Mg

Cr

other each

other total

margin

0.70

0.25

0.32

0.89

0.94

0.03

≤0.05

≤0.15

Al

[0627] Alloy 6013 achieves a peak LT tensile yield strength of approximately 64-65 ksi at 75% cold work and 60-61 ksi at 55% cold work, which is several times higher than the peak strength of the control alloy (T6) 8-13ksi. The 75% and 55% cold worked alloys achieved these strengths faster than the control (T6) alloy.

[0628] The optical prop...

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Abstract

New 6xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 6xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 6xxx aluminum alloy bodies may realize improved strength and other properties.

Description

[0001] Cross references to related patent applications [0002] This patent application claims U.S. Provisional Patent Application No. 61 / 608,092, filed March 7, 2014, entitled "IMPROVED 6XXX ALUMINUM ALLOYS, AND METHODS FOR PRODUCTING THE SAME" Priority, this patent application is incorporated herein by reference in its entirety. [0003] This patent application is related to (a) U.S. Provisional Patent Application No. 61 / 608,050 filed March 7, 2012 and (b) U.S. Provisional Patent Application No. 61 / 608,075 filed March 7, 2012 and (c) 2012 U.S. Provisional Patent Application No. 61 / 608,034, filed March 7, 2012 and (d) U.S. Provisional Patent Application No. 61 / 608,098, filed March 7, 2012. Background technique [0004] Aluminum alloys can be used in a variety of applications. However, improving one property of an aluminum alloy without deteriorating another property is difficult to achieve. For example, it is difficult to increase the strength of an alloy without reducing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D21/04C22C21/00C22C21/08
CPCC22F1/002B62D29/008B22D21/04B22D11/1213C22F1/047C22C21/02C22F1/043C22F1/05B22D11/0622C22C21/08B22D11/003
Inventor 雷杰夫·卡迈特约翰·M·纽曼拉尔夫·R·索泰尔林正淳达尔·G·博伊赛尔加里·H·布雷詹姆斯·丹尼尔·布赖恩特布雷特·P·康纳马里奥·格雷科吉诺·诺曼·亚塞拉戴维·J·麦克尼什肖恩·J·默撒罗伯托·J·洛加肖恩·P·沙利文亚可·P·苏尼
Owner ARCONIC INC
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