Effect of enhanced interfacial reaction on the microstructure, phase transformation and mechanical property of Ni–Mn–Ga particles/Mg composites

Tian, B.; Cheng, Zhuming; Tong, Y.X.; Li, L.; Zheng, Yufeng; Li, Q.Z.

doi:10.1016/j.matdes.2015.05.051

Cited by 17 publications

(4 citation statements)

References 10 publications

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“…Ni-Mn-Ga particles/polymer composites avoid the aforementioned disadvantages representing an attractive solution for designing new magnetically controlled damping and magnetostrain-active materials [13,14]. A primary precondition for such materials is that the individual particle, to be magneto-mechanically active, should be in the martensitic state with a mobile twin structure.…”

Section: Introductionmentioning

confidence: 99%

Compression response of Ni–Mn–Ga/silicone composite and study of three-dimensional deformation of particles

Sratong-on

Tahara

Inamura

et al. 2018

Smart Mater. Struct.

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Ni–Mn–Ga particles/silicone composite was fabricated for a mechanical investigation. The characteristic twinning structure of particles and soft enough matrix provide the conditions enabling the possibility for particles to deform by the twin boundaries motion mechanism under applied stress and/or magnetic field. On the macroscopic scale, the large hysteretic loops in the stress–strain curves for composite evidence about its high energy absorption capability. On the microscopic scale, the in situ compression test was performed using an x-ray micro-computed tomography to study the individual deformation of particles. The strain behavior of individual particles in the three different configuration of groups was disclosed as a function of the compression degree of composite showing large reversible deformation of particles, signature of the twin structure rearrangement. The unusual drop of particles strains at very high compression degrees of composite is explained in terms of the non-uniform stress field in polymer produced by the neighbor particles interactions affected by barreling. The obtained results support the reason that the particles in composite should be arranged in single chains to avoid their interaction which is a way to improve the composite performance in the mechanical damping and magnetic actuator applications.

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Section: Introductionmentioning

confidence: 99%

Compression response of Ni–Mn–Ga/silicone composite and study of three-dimensional deformation of particles

Sratong-on

Tahara

Inamura

et al. 2018

Smart Mater. Struct.

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“…In general, polycrystalline bulk Ni-Mn-Ga alloysare brittle, costly and display moderate MFIS due to high twinning stresses limiting their practical applications. Therefore, various processing methods have been developed to modify microstructure and mechanical properties of the Ni-Mn-Ga alloys such as melt spinning [13], spark plasma sintering [14,15], composites [16][17][18][19]and thin films [20][21][22]. Another alternative to reach high MFIS is to manufacture a porous structure to reduce internal constraints.…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution and magnetic properties of binder jet additive manufactured Ni-Mn-Ga magnetic shape memory alloy foam

et al. 2017

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This study investigatedmicrostructural evolution, phase transformation and magnetic behavior of additively manufactured magnetic shape memory alloy foam. Pre-alloyed angular Ni-Mn-Ga ball-milled powderwasbinder jet printed and sintered at 1020 °C for 4 h in both vacuum and argon atmospheres. Porosity of the manufactured foams was studied using micro-computed x-ray tomography and it was found that the relative density of the sintered parts wasabout50-60%. In the printed sample that was sintered in argon, electron microscopy with elemental analysis showed no compositional gradient. X-ray diffraction indicated that 10M modulated martensite was present in the pre-alloyed powder as well asthe sample sintered in argon. Differential scanning calorimetry and thermomagnetic results showed that martensitic transformation of the sample sintered in argon wasat 34 °C, while barely detectable in the sample sintered in vacuum.Saturation magnetization of the printed sample sintered in argon atmosphere was around 68.4Am 2 /kg.Production of a magnetic shape memory alloy by printing would enablecomplexshaped elements for demanding applications, and intentionally including porosity could allow these polycrystals to exhibit the magnetic shape memory effect. Therefore, a facile method for sintering of Ni-Mn-Ga printed parts has been presented for the first time.

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“…The shape memory effect that is based on those integrated transformations thus becomes controllable, and it makes FSMAs viable for potential applications as actuators, sensors and electromagnetic devices. Since a large magnetically induced strain was confirmed in Ni 2 MnGa alloys [1,2], extensive studies have been conducted in developing new ferromagnetic shape memory alloys, such as Ni 2 FeGa [3,4], Co 2 NiGa [5,6], CuAlMn [7,8] and Fe 2 MnGa [9,10] alloys.…”

Section: Introductionmentioning

confidence: 99%

Annealing effects on the structural and magnetic properties of off-stoichiometric Fe-Mn-Ga ferromagnetic shape memory alloys

et al. 2016

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Annealing plays an important role in modifying structures and properties of ferromagnetic shape memory alloys (FSMAs). The annealing effect on the structures and magnetic properties of off-stoichiometric Fe 45 Mn 26 Ga 29 FSMA has been investigated at different elevated temperatures. Rietveld refinements of neutron diffraction patterns display that the formation of the ɣ phase in Fe 45 Mn 26 Ga 29 annealed at 1073 K increases the martensitic transformation temperature and reduces the thermal hysteresis in comparison to the homogenized sample. The phase segregation of a Fe-rich cubic phase and a Ga-rich cubic phase occurs at the annealing temperature of 773 K. The atomic occupancies of the alloys are determined thanks to the neutron's capability of differentiating transition metals. The annealing effects at different temperatures introduce a different magnetic characteristic that is associated with distinctive structural changes in the crystal.

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Effect of enhanced interfacial reaction on the microstructure, phase transformation and mechanical property of Ni–Mn–Ga particles/Mg composites

Cited by 17 publications

References 10 publications

Compression response of Ni–Mn–Ga/silicone composite and study of three-dimensional deformation of particles

Compression response of Ni–Mn–Ga/silicone composite and study of three-dimensional deformation of particles

Microstructural evolution and magnetic properties of binder jet additive manufactured Ni-Mn-Ga magnetic shape memory alloy foam

Annealing effects on the structural and magnetic properties of off-stoichiometric Fe-Mn-Ga ferromagnetic shape memory alloys

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