|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Nanocrystalline and Ultra-fine Grain Materials and Bulk Metallic Glasses
||Static Recrstallization and Grain Growth of Accumulative Roll Bonded Aluminium Laminates
||Laura Lienshoeft, Paul Chekhonin, Juliane Scharnweber, Tom Marr, Tina Hausöl, Heinz Werner Hoeppel, Werner Skrotzki
|On-Site Speaker (Planned)
Aluminium laminates of high and technical purity layers were produced by accumulative roll bonding (ARB) at room temperture. To study the thermal stability, the laminates after 2 to 9 ARB cycles were annealed at 300°C and 400°C for one hour. The microstructure was analyzed by electron backscatter diffraction. The results show that for low ARB cycles and low annealing temperature the deformed technical pure layers start to recrystallize while the high purity coarse recrystallized layers experience intralayer grain growth. For higher cycles and higher annealing temperature the ultra-fine grained technical pure layers are consumed by layer overlapping growth of high purity grains producing a banded grain structure. For 9 ARB cycles a globular grain structure develops with grain sizes larger than twice the layer thickness. The effect of impurities on recrystallization and grain growth of ARB Al laminates will be discussed with regard to tailoring the ARB microstructure.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)