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    Development of Aluminum Alloy AA5754 Production with a Different Magnesium Content by a Twin-Roll Casting Process
    (Springer, 2015) Turbalioglu, K.; Sun, Y.; Turen, Y.
    The effect of magnesium content and different thermomechanical treatment regimes on structure formation for sheet aluminum alloy AA5754 produced by twin-roll casting technology is evaluated. Cast sheets of alloy AA5754 containing 2.8, 3.0, and 3.2 wt.% magnesium 6 mm thick are cold rolled to a thickness of 1 mm. Three thermomechanical treatment regimes and annealing for alloy AA5754 are studied. Specimens obtained by this technology are strength tested. Grain size and distribution within the structure of finished sheet workpieces are determined by a standard procedure. With an increase in magnesium content in specimen grain diameter is considerably reduced. All specimens, prepared by a supplementary production scheme using homogenizing heat treatment in the final annealing stage, have maximum ductility, and also higher values of ultimate and yield strength than for specimens prepared using other production schemes and changed magnesium content.
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    The improvement of the mechanical properties of AA 6063 aluminum alloys produced by changing the continuous casting parameters
    (2011) Turbalioglu, K.; Sun, Y.
    This study aims to improve manufacturing parameters of the AA 6063 aluminum alloy produced with the vertical continuous casting method. For this purpose, the billets were manufactured at different metal temperatures and different casting speeds, using the vertical continuous casting method. Billet specimens were prepared at two different conditions: casting and homogenization heat treatment. The homogenization heat treatment was applied at 580°C for 4 h. Specimens at each group were exposed to microstructure analyses and hardness and tensile tests in order to determine their mechanical properties. As a result of the applied experiments, it was determined that the mechanical properties varied depending on metal temperature and casting speed; and the optimum casting parameters were 690°C metal temperature and 100 to 110 mm/min casting speed. ©2011 Academic Journals.