Magnetically Affected Texture and Microstructure Evolution during Grain Growth in Zirconium

Abstract:

The effect of a magnetic field on texture and microstructure development in cold rolled (80%) commercially pure zirconium (Zr701) was investigated. X-ray diffraction and EBSD measurements were utilized for the texture and microstructure characterization. The results revealed that a magnetic field promotes grain growth in the investigated material. During annealings at 550°C this is particularly apparent from the faster development of specific (0/180, 35, 30) texture components and the bigger mean grain size after magnetic annealing. The magnetic annealing at 700°C resulted in an asymmetry of the two major texture components. This is due to a magnetic driving force for grain growth arising from the anisotropic magnetic susceptibility of zirconium. During annealing at 700°C the abnormal grain growth occurred. This behavior is attributed to the higher mobility of grain boundaries between grains misoriented by 30° around [000. The magnetic field essentially enhanced the observed abnormal grain growth.

• Periodical: Materials Science Forum (Volumes 715-716)
• Pages: 946-951
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.715-716.946
• Online since: April 2012
• Authors: Dmitri A. Molodov, Nathalie Bozzolo
• Keywords: Grain Growth, Magnetic Anisotropy, Magnetic Annealing, Zirconium

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