Two-Way Shape Memory Effect Induced by Tensile Deformation in Columnar-Grained CuAlMn Alloy.

Columnar-grained CuAlMn shape memory alloy (SMA) was prepared by a directional solidification method and exhibited a high superelasticity of 8.18% and excellent ductility at room temperature, which provided the possibility of obtaining high shape memory. However, proper pre-deformation is an essential part of repeatedly obtaining large and stable shape change.