| Abstract Scope |
While zirconia-based ceramics exhibit potential for shape memory and superelastic properties at a small scale, scaling up these properties to the bulk level is challenging due to the significant shear strain during phase transformation, often resulting in catastrophic failure. By incorporating the zirconia particles with metals to fabricate metal matrix composites, these shape memory particles can retain their functionality within the metal matrix, showing stress-induced martensitic transformation on both the bulk and meso-scale. Further, both forward and reverse transformations can be induced through cooling and heating, respectively, with the extent of transformation dictated by the matrix constraint. By controlling the interface bonding via various advanced manufacturing routes, we quantify the effects of mechanical constraint on thermally and mechanically induced martensitic transformation via in situ X-ray diffraction and Raman spectroscopy. |