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Crystallographic Characterization on Polycrystalline Ni-Mn-Ga Alloys with Strong Preferred Orientation

Abstract : Heusler type Ni-Mn-Ga ferromagnetic shape memory alloys can demonstrate excellent magnetic shape memory effect in single crystals. However, such effect in polycrystalline alloys is greatly weakened due to the random distribution of crystallographic orientation. Microstructure optimization and texture control are of great significance and challenge to improve the functional behaviors of polycrystalline alloys. In this paper, we summarize our recent progress on the microstructure control in polycrystalline Ni-Mn-Ga alloys in the form of bulk alloys, melt-spun ribbons and thin films, based on the detailed crystallographic characterizations through neutron diffraction, X-ray diffraction and electron backscatter diffraction. The presented results are expected to offer some guidelines for the microstructure modification and functional performance control of ferromagnetic shape memory alloys.
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https://hal.univ-lorraine.fr/hal-03080402
Contributor : Yudong Zhang <>
Submitted on : Thursday, December 17, 2020 - 4:34:18 PM
Last modification on : Tuesday, March 30, 2021 - 3:12:03 PM

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Zongbin Li, Bo Yang, Naifu Zou, Y. D. Zhang, Claude Esling, et al.. Crystallographic Characterization on Polycrystalline Ni-Mn-Ga Alloys with Strong Preferred Orientation. Materials, MDPI, 2017, 10 (5), pp.463. ⟨10.3390/ma10050463⟩. ⟨hal-03080402⟩

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