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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.
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Dmitri A. Molodov, Nathalie Bozzolo. Magnetically affected texture and microstructure evolution during grain growth in zirconium. 4th International Conference on Recrystallization and Grain Growth, ReX and GG IV, Jul 2010, Sheffield, United Kingdom. pp.Pages 946-951 - edited by E.J. Palmiere and B.P. Wynne, ⟨10.4028/www.scientific.net/MSF.715-716.946⟩. ⟨hal-00700724⟩

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