1. Anomalous texture development induced by grain yielding anisotropy in Ni and Ni-Mo alloys
- Author
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Yuan Huang, Lu Han, Zumin Wang, Lars P. H. Jeurgens, Yifei Xu, Yongchang Liu, Claudia Cancellieri, and Jing Wang
- Subjects
010302 applied physics ,Materials science ,Polymers and Plastics ,Condensed matter physics ,Annealing (metallurgy) ,Metals and Alloys ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Surface energy ,Electronic, Optical and Magnetic Materials ,Strain energy ,Thermodynamic model ,Computer Science::Graphics ,Computer Science::Computer Vision and Pattern Recognition ,0103 physical sciences ,Ceramics and Composites ,Grain boundary ,Thin film ,0210 nano-technology ,Anisotropy ,Texture mapping - Abstract
During the annealing of Ni and Ni-Mo films, a {110} texture, usually considered to be both of high surface energy and high strain energy, was found to develop. Quantitative thermodynamic model calculations showed that the anomalous formation of this {110} texture originates fundamentally from the grain yielding anisotropy of Ni. Based on extensive grain yielding anisotropy model calculations, a “texture map” based on {111}, {100}, and {110} textures was constructed to predict the texture transition temperatures for different film thicknesses. A kinetic analysis of the texture evolution in the films is further presented, revealing that the texture evolution is controlled by the self-diffusion of atoms at grain boundaries. These findings pave the way for the achievement of unusual surface orientations through the quantitative texture design of thin films.
- Published
- 2020