A microcompression study of shape-memory deformation in U-13 at.% Nb

作者：Clarke A J; Field R D^*; Dickerson P O; McCabe R J; Swadener J G; Hackenberg R E; Thoma D J

来源：Scripta Materialia, 2009, 60(10): 890-892.

DOI：10.1016/j.scriptamat.2009.02.003

• Shape memory alloys (SMAs)
• Microcompression testing
• Electron backscattering diffraction (EBSD)
• Transmission electron microscopy (TEM)

Microcompression specimens, 10-15 mu m in diameter by 20-30 mu m 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.

• 出版日期2009-5