The crystallography of continuous precipitates with a newly observed orientation relationship in an Mg–Al-based alloy

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A new orientation relationship (OR) between γ-Mg 17 Al 12 precipitate and magnesium matrix is identified by the selected-area electron diffraction technique, together with the convergent beam electron diffraction method. The stereogram for the new orientation relationship has been calculated and discussed along with the stereograms for the Pitsch–Schrader OR, the Burgers OR, the Potter OR, the Crawley OR, the Porter OR and the Gjönnes–Östmoe OR in the Mg–Al-based system.