Steel material for dissimilar metal joining, joined body of dissimilar metals and process for joining dissimilar metal materials
US8337998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2012 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jan 26, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A joined body of dissimilar metals which is produced by joining a steel material and an aluminum alloy material, wherein the steel material to be joined has a specific composition and is specified in the compositions of outer surface oxide layer and inner oxide layer and the aluminum alloy material to be joined is an Al—Mg-base or Al—Zn—Mg-base aluminum alloy having a specific composition. In the joined body of dissimilar metals, a content of Fe at a joint interface on the aluminum alloy material side is regulated, and a reaction layer of Fe and Al is formed at the joint interface of the joined body of dissimilar metals. The joined body of dissimilar metals exhibits high joint strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.