AFM Observation of Fe-Al Single Crystals under in situ Deformation
J. Veselýa, M. Cieslara and J. Kopečekb
aCharles University in Prague, Faculty of Mathematics and Physics, Department of Physics of Materials, Ke Karlovu 5, 121 16 Praha 2, Czech Republic
bInstitute of Physics AV ČR, v. v. i., Prague, Czech Republic
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Fe-Al single crystals of three different compositions (20, 28 and 40 at.% Al) in single slip orientation were studied. Evolution of their surfaces during deformation at room temperature was observed in situ in atomic force microscope. Atomic force microscopy allows us to investigate slip lines on much finer scale than traditional optical observations. Wavy slip bands in Fe-Al20, cross-slip in Fe-Al28 and weak slip line texture in Fe-Al40 are described. Post mortem observations of surfaces of Fe-Al28 deformed at elevated temperatures (in the range of yield stress anomaly) are presented as well.
DOI: 10.12693/APhysPolA.122.618
PACS numbers:, 62.20.F-, 68.37.Ps