In-Situ EBSD Observations of Recrystallization and Texture Evolution in Rolled Mg-2Zn-xCe (wt.%)


This chapter indicates that wrought magnesium (Mg) alloys are attractive for automotive applications where light weighting is critical. For electron backscatter diffraction (EBSD) analysis, ∼10 mm wide and ∼15 mm long samples were cut from the sheet material using a diamond saw. One of the sample surfaces was mechanically polished and then electropolished using a mixture of 30% Nitric acid and 70% Methanol as electrolyte. EBSD analysis was performed while the sample was kept at a desired temperature. A thermocouple was spot welded to the sample surface to monitor the temperature. Both as‐rolled materials exhibited a basal texture in which the c‐axis tends to align perpendicular to the rolling direction. Grain boundaries with orientation relationships corresponding to {10 2} extension twinning (86° about <11 0>), {10 1} contraction twinning (56° about <11 0>), and (10 2)‐(01 2) extension double twin (60° about <10 0>) were observed. This was expected to be due to the recovery and growth of the twins formed during the rolling process.
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