A HREM and Analytical STEM Study of Precipitates in an AZ91 Magnesium Alloy |
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Authors: | Jiří Bursšík Milan Svoboda |
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Institution: | (1) Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Žižkova 22, 616 62 Brno, Czech Republic, CZ |
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Abstract: | The paper focuses on the microstructural characterisation of secondary phases in an AZ91 magnesium alloy. The orientation
relationship and atomic structure of semi-coherent Mg/Mg17Al12 interfaces are studied by means of selected area diffraction, EDS and high resolution TEM. Besides the common Mg17Al12 semi-coherent platelets of high density and coarser incoherent Mg17Al12 particles, other, less frequent precipitates were found, rich in Al and Mn. The quasicrystalline nature of these precipitates
was detected by means of electron diffraction. |
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Keywords: | : Magnesium alloy transmission electron microscopy EDS quasicrystal diffraction |
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