Method of creating a cast automotive product having an improved critical fracture strain
US8721811B2 · kind B2 · utility
5Cited by
144References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/043
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.