High crashworthiness Al-Si-Mg alloy and methods for...

Details High crashworthiness Al-Si-Mg alloy and methods for... High crashworthiness Al-Si-Mg alloy and methods for...

2006-10-26

2011-12-27

Wyszomierski, George (Department: 1733)

Metal treatment

Stock

Aluminum base

C420S546000

Reexamination Certificate

active

08083871

ABSTRACT:
The present invention provides a casting having increased crashworthiness including an aluminum alloy of about 6.0 wt % to about 8.0 wt % Si; about 0.12 wt % to about 0.25 wt % Mg; less than or equal to about 0.35 wt % Cu; less than or equal to about 4.0 wt % Zn; less than or equal to about 0.6 wt % Mn; and less than or equal to about 0.15 wt % Fe, wherein the cast body is treated to a T5 or T6 temper and has a tensile strength ranging from 100 MPa to 180 MPa and has a critical fracture strain greater than 10%. The present invention further provides a method of forming a casting having increased crashworthiness.

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