Abstract
High-strength aluminum alloy sheets with high magnesium contents were fabricated by a strip caster equipped with an asymmetric nozzle, which has been proven to be effective for reducing surface defects and internal segregation. 4 mm thick as-cast sheets consisting of fine dendrites and minor Al 8Mg5 segregation were hot-rolled successfully to 1 mm sheets and subsequently annealed at various temperatures. The sheet revealed the tensile strength and elongation of 306 MPa and 34%, respectively, when it was rolled at 250°C and subsequently annealed at 475°C, which exhibits the feasibility of the practical application for autobodies. The observed mechanical properties were explained on the basis of the microstructural characteristics of the alloy sheets.
| Original language | English |
|---|---|
| Pages (from-to) | 387-393 |
| Number of pages | 7 |
| Journal | Journal of Korean Institute of Metals and Materials |
| Volume | 48 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2010 May |
Keywords
- Al-Mg alloy
- Hot rolling
- Optical microscopy
- Strength
- Twin-roll strip casting
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Modelling and Simulation
- Surfaces, Coatings and Films
- Metals and Alloys