The effect of Mg content on microstructure in Al?12wt. %Zn?x Mg Alloy
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Abstract
The effect of adding different Mg contents to an Al?12wt.%Zn master alloy was experimentally investigated. The Al?Zn?Mg alloys were unidirectionally solidified as a function of solidification parameters, temperature gradient GL, solidification front velocity V, and composition C0. The alloys were solidified with a constant temperature gradient (GL=2500K/m) in the solidification front velocity range from 4X10?6m/s to 1.7X10?4m/s. The resulting microstructure was characterized to investigate the effect of solidification front velocities and composition on primary dendrite arm spacing, volume percentage of eutectic in interdendritic regions and τ intermetallic phase in α?Al matrix. Theoretical models for the dendrite arm spacing and dendrite tip radius have been compared with the experimental observations.
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Suárez, M. A., Campillo, B. .-., Rodríguez-Diaz, R. A., Alvarez-Fregoso, O., & Juárez-Islas, J. A. (2009). The effect of Mg content on microstructure in Al?12wt. %Zn?x Mg Alloy. Journal of Applied Research and Technology, 7(02). https://doi.org/10.22201/icat.16656423.2009.7.02.499
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