Aluminum alloy sheet excellent in press-formability and shape fixability and method of production of same
US9896754B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2013 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Oct 18, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D11/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An aluminum alloy sheet which has high strength enabling application to automobile body sheet and which is excellent in press-formability and shape fixability and a method of production of the same are provided. Aluminum alloy sheet having a composition of ingredients which contains Mg, Fe, and Ti, restricts the impurity Si to less than 0.20 mass %, and has a balance of Al and unavoidable impurities and a metal structure with an average grain size of less than 15 μm and having second phase particles with a circle equivalent diameter of 3 μm or more in a number of less than 300/mm2 and having a tensile strength of 240 MPa or more, a yield strength of less than 130 MPa, an elongation of 30% or more, and a plane strain fracture limit at a strain rate of 20/sec of 0.20 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.