Effect of annealing texture on shape memory effect in an Fe-Mn-Si-Cr alloywire

The annealing textures were analyzed by means of an ODF software in an Fe-2 7Mn-6Si-5Cr alloy wire annealed at various temperatures from 873 similar to 1223 K. At the same time, the shape-recoverable degrees of the wire specim ens were measured by tensile strain at room temperature followed by recover y heating. A nearly unique (001) texture appears in the wire specimen annea led at 973 K, in which the highest shape recovery ratio is obtained. A synt hesis orientation factor S has been definded as a parameter for estimating the tendency for polycrystalline materials to stress-induced martensitic tr ansformation. The reason for the influence of texture on the shape memory e ffect is discussed.