|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||C-25: Microstructure and Mechanical Properties of Three Dissimilar Aluminum Alloys by Accumulative Roll-bonding Process
||Jung-Han Kim, Min-Suk Oh, Cheol-Woo Kim, Jae-Ik Cho, Hyeon-Taek Son
|On-Site Speaker (Planned)
Ultrafine grained AA1050/AA6061/AA5052 Al alloy sheet was successfully fabricated by four-layer stack ARB process. The ARB of AA1050, AA6061 and AA5052 alloy sheets were processed up to 4 cycles without a lubricant at ambient temperature. The sample fabricated by the ARB was a multi-layer aluminum alloy sheet in which AA1050, AA6061 and AA5052 layers are alternately stacked. The layer thickness of the each alloy became thinner and more elongated to the rolling direction with increased number of ARB cycles. The tensile strength was increased with the ARB, up to 392 MPa which is almost 2.4 times that of the starting materials. The grain size was decreased with increased number of ARB cycles, about 210 nm in thickness after 4 cycles. The variation of mechanical properties with the ARB was similar to those of the other ARB processed materials. However, the texture development was different from the conventional ARB processed materials.
||Planned: Light Metals