The influence of melt flow on grain structure of tin and its alloys produced by ultrafast quenching from the melt

International Conference "Structural and Phase Transformations in Materials: Theory, Computer Modelling and Experiment"

材料科学;计算机科学

Gusakova, Olga^1 ; Shepelevich, Vasiliy^2

Department of Nuclear and Radiation Safety, International Sakharov Environmental Institute, Belarussian State University, Dolgobrodskaya st. 23, Minsk

220070, Belarus^1

Department of Solid-State Physics, Belarussian State University, Nezavisimosti pr.4, Minskg

220050, Belarus^2

关键词: Crystallographic orientations;    Elongated grains;    Large-grain;    Solidified materials;    Subgrain structures;    Ultrafast quenching;    Undercooled melt;    Viscous forces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/192/1/012015/pdf
DOI  :  10.1088/1757-899X/192/1/012015

来源: IOP

【 摘 要 】

The results on the grain structure and texture of tin and tin-based foils produced by ultrafast quenching from the melt are presented in this work. The formation of fine equiaxed and large grains elongated along the spreading direction of the foil was observed. Detailed studies of subgrain structure showed that the crystallographic orientation of elongated grains changes monotonically within the grain. It can be assumed that the reason for the change of crystallographic orientation is the deformation of solidified material. The deformation is caused by the viscous force of undercooled melt which moves above the crystallization front in the direction of the foil spreading.