Crystal orientation in Ni–Mn–In melt-spun ribbons
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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 <001> 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.
KeywordsShape memory alloys Texture Rapid solidification Microstructure Electron backscattered diffraction (EBSD)
This work is financially supported by the National Natural Science Foundation of China (Nos. 51301134 and 51401122).
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