Throughput study of diffusion along the twin boundaries in Mg-5Sn-0.3Li as-cast alloy and its effect on the homogenization during hot deformation

•Clarification the role of dendrite growth pattern on the solidification texture.•Effect of dendrite morphology and solidification texture on deformation mechanisms.•Homogenization of the dendritic structures via diffusion along the twin boundaries. This study offers the effect of dendrite orientation selection on the defamation mechanisms and their subsequent effects on the homogenization of the dendritic structure during hot deformation processes. The results indicated that the solidification macro-texture has controlled by the dendrite growth pattern, which has effectively influenced the dominant deformation mechanisms (slip/twin activity). Interestingly, the boundary of the exhausted twins has been preferred for solute diffusion and has effectively contributed to the homogenization of the dendritic structure during hot deformation processes.