OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 24 No. 4 2022 Post-mortem testing of alloys The laminography method can also be used to study materials that have previously been subjected to various types of external actions. In these cases there is no need to install any additional equipment on the station. Deformation and failure of magnesium alloy Kondori et al. [36] presented the results of a study of the AZ31B magnesium alloy by the laminography method. Samples cut from a 32 mm thick hot-rolled plate (Fig. 13 a, b) were subjected to uniaxial tension in a servo-hydraulic machine. One sample was deformed to failure; the other was deformed to the stage corresponding to a significant drop in load. The sections of the rods obtained in the EDM machine (Fig. 14, c) were examined by laminography at the ID19 ESRF station. The mechanisms of accumulation of post-embryonic damage and its role in the formation and growth of macroscopic cracks were studied. The tilt angleof the rotationaxis of theobjectswas ~25°.The studieswere carriedout usingmonochromatic radiation with a photon energy of 25 keV. The minimum distance from the sample to the detector was a b Fig. 13. Samples (RN10 and RN2) (a) orientation in the plate and its geometry (b) [36] a b c Fig. 14. Schematic of cutting out objects from tensile deformed specimens studied by the laminography: a, b – top views showing the dimensions and relative location of two longitudinally cut plates; c – view of a single plate with four study areas labeled as Surface-Scan and Central-Scan [36]
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