Crystal orientation in Ni-Mn-In melt-spun ribbons

The crystal orientation of Ni50Mn25In25 and Ni50Mn34In16 melt-spun ribbons which appears parent phase at room temperature was investigated in this paper. The grains grow perpendicular to the surface of the ribbon and show columnar crystals distinctly. X-ray diffraction and electron backscattered diffraction were used to identify the orientation information of the ribbons. It is indicated that the well-developed preferred orientation of these columnar crystals is parallel to direction, and this is in accordance with that in other shape memory ribbons, which was named as Eucken-Hirsch texture. This kind of texture predicts that it is beneficial to the magnetic field-induced strain compared with the common polycrystals. The results obtained in this paper provide reference for the preparation of Ni-Mn-In melt-spun ribbons.