Materials Science Forum, Vol.394-3, 205-208, 2001
Effect of grain boundaries on the superelastic deformation of CuAlMn shape-memory bicrystals
Cu-Al-Mn shape memory alloy bicrystals were grown by the Bridgman method. All the component single crystals showed superelasticity at room temperature. Superelastic shape recovery in a bicrystal having large difference of crystallographic orientation in two grains was incomplete, and plastic strain was left after unloading. Configuration of martensite variants near grain boundaries was different from the matrix, and was examined in terms of the compatibility of transformation strain at the boundaries.