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Evolution of crystalline misorientations in polycrystalline samples of pure ice
Chemical Physics ( IF 2.3 ) Pub Date : 2024-03-22 , DOI: 10.1016/j.chemphys.2024.112268
C.L. Di Prinzio , P. Achával , G. Aguirre Varela

There are few studies where the evolution of grain orientations and crystal misorientations of neighboring grains in a polycrystalline ice sample during grain growth are analyzed. In this work, crystal orientations and misorientations were studied in two ice cylinders obtained from bidistilled water using the techniques of plastic replicas and chemical etching pits. The cylinders were grown, one through fast freezing and the other through slow freezing. It was observed that the initial crystal orientations of the grains varied from one cylinder to the other, but this did not result in significant differences in the final crystal misorientations between neighboring grains. Such crystal misorientations could be special because they are related to a coincidence sites lattice (CSL), which could be associated with low-energy grain boundaries. Therefore, the decrease in grain boundary energy during grain growth could be influenced by these special crystal misorientations.

中文翻译:

纯冰多晶样品中晶体取向错误的演变

很少有研究分析晶粒生长过程中多晶冰样品中相邻晶粒的晶粒取向和晶体取向差的演变。在这项工作中,利用塑料复制品和化学蚀刻坑技术,研究了从双蒸馏水中获得的两个冰缸的晶体取向和取向错误。圆柱体的生长,一个通过快速冷冻,另一个通过慢速冷冻。据观察,晶粒的初始晶体取向从一个圆柱体到另一个圆柱体有所不同,但这并没有导致相邻晶粒之间最终晶体取向差的显着差异。这种晶体取向错误可能很特殊,因为它们与重合位点晶格(CSL)有关,而重合位点晶格可能与低能晶界有关。因此,晶粒生长过程中晶界能的降低可能受到这些特殊晶体取向错误的影响。
更新日期:2024-03-22
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