About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
F-18: Hybrid Aluminum Sheets with Improved Mechanical Properties by Repeated Roll-bonding Process |
Author(s) |
Cha-Yong Lim, Seunghee Lee |
On-Site Speaker (Planned) |
Cha-Yong Lim |
Abstract Scope |
Three kinds of aluminum alloys (AA1050, AA5052, AA6061) were roll-bonded to make hybrid Al sheets with improved mechanical properties. Al sheets with 1 mm thickness, 30 mm width and 300 mm length, were first degreased and wire-brushed for sound roll bonding. The different sheets were then stacked on top of each other and rolled by 50% reduction rate without lubrication at room temperature. The rolled sheet was cut into two pieces of the same dimensions and the same procedure was repeated up to 6 cycles. Microstructural evolution of bonded sheets with the number of the repeated roll-bonding cycles was investigated by OM, TEM, and EBSD. The grain size decreased gradually with the number of repeated roll bonding cycles. The strength of the bonded sheets increased with the number of repeated roll-bonding cycles. Various combinations of strength and elongation were obtained by controlling the repeating cycle and subsequent heat treatment. |
Proceedings Inclusion? |
Planned: Light Metals |