Microstructure of a Zn-27 wt.% Al (ZA27) alloy. The α+η eutectoid is formed during the final stage of solidification, from α dendrites and β peritectic through a transformation at 548 K, following the Zn-Al phase diagram.
Alicia E. Ares, Carlos E. Schvezov
CC BY 4.0
Alicia E. Ares et. al. "Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles", Journal of Metallurgy <a rel="nofollow" class="external text" href="https://doi.org/10.1155/2013/628495">doi:10.1155/2013/628495</a>