Microcompression specimens, 10–15 µm in diameter by 20–30 µm in height, were produced from individual parent grains in a polycrystalline U–13 at.%Nb shape-memory alloy using the focused ion beam technique. The specimens were tested in a nanoindentation instrument with a flat diamond tip to investigate stress–strain behavior as a function of crystallographic orientation. The results are in qualitative agreement with a single-crystal accommodation strain (Bain strain) model of the shape-memory effect for this alloy.
- shape memory alloys
- microcompression testing
- electron backscattering diffraction
- transmission electron microscopy
Clarke, A. J., Field, R. D., Dickerson, P. O., McCabe, R. J., Swadener, J. G., & Hackenberg, R. E. (2009). A micro-compression study of shape-memory deformation in U-13 at.% Nb. Scripta Materialia, 60(10), 890-892. https://doi.org/10.1016/j.scriptamat.2009.02.003