Grain Boundary Migration and Grain Growth Texture Evolution in Zn in a High Magnetic Field

Abstract:

The magnetically driven motion of planar symmetrical and asymmetrical <> tilt grain boundaries in high purity (99,995%) zinc bicrystals was measured in-situ by means of a po­la­rization microscopy probe in the temperature range between 330°C and 415°C and the corres­pon­ding migration activation parameters were obtained. The results revealed that grain boundary mobi­lity essentially depends on the misorientation angle and the inclination of the boundary plane. The magnetic annealing of the cold rolled (90%) Zn-1.1%Al sheet specimens resulted in an asymmetry of the two major texture components. This effect is attributed to a magnetic driving force for grain growth. The grain microstructure evolution was also essentially affected by a magnetic field.

• Periodical: Materials Science Forum (Volumes 702-703)
• Pages: 635-638
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.702-703.635
• Online since: December 2011
• Authors: Christoph Günster, Dmitri A. Molodov, Günter Gottstein
• Keywords: Grain Boundary Mobility, Grain Growth, Magnetic Field, Texture

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