Changes in microstructure and texture are described in polycrystalline ice compressed at temperatures of –10 and –1℃ and annealed for various times at –1℃ without a load. The microstructures, obtained under these conditions, were studied by means of polarized light microscopy, both mean and maximum grain sizes were determined. In the colder finer grained samples (–10℃) the grain size increase during annealing was not as rapid as the coarser hot worked (–1°) samples. Little textural change was observed in the annealed hot worked samples, however the strong preferred orientation of the colder samples was destroyed with annealing. The change in texture corresponded to a decrease in the grain growth rate and the formation of a stable grain structure. Increasing strain and decreasing the deformation temperature both reduce annealing time and the annealed grain size.
Wilson, C. J. L. (2008). Texture and Grain Growth during the Annealing of Ice. Textures and Microstructures, 5(1), 19–31. https://doi.org/10.1155/tsm.5.19