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Meeting Materials Science & Technology 2020
Symposium Sintering and Related Powder Processing Science and Technologies
Presentation Title The Effect of Texturing by Applied Magnetic Field on Grain Growth of Alumina
Author(s) Bryan M. Conry, Michael S. Kesler, Amanda R Krause
On-Site Speaker (Planned) Bryan M. Conry
Abstract Scope Grain growth is a critical mechanism to metals and ceramics processing, as grain size is critical to bulk properties. Abnormal grain growth (AGG) is a process by which a small fraction of grains grow faster than their neighbors, resulting in a bimodal grain size distribution and heterogeneous bulk properties. The cause and underlying mechanisms behind AGG are poorly understood, although it has been theorized that anisotropy of grain boundary energy is directly related to AGG. We employ magnetically induced texturing of Ca-doped alumina, a widely used ceramic in industry that is known to exhibit significant grain boundary energy anisotropy, to investigate this theory. We will compare the extent of AGG in samples with varying degrees of texturing cast in the magnetic field. By comparing samples cast in different fields, we can quantitatively determine the relationship between degree of texture, grain growth behavior, and distribution of grain boundary character anisotropy.
Proceedings Inclusion? Undecided


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The Effect of Texturing by Applied Magnetic Field on Grain Growth of Alumina

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