Low-hysteresis tensile superelasticity in a Ni-Co-Mn-Sn magnetic shape memory microwire

Liu, D.M.; Cong, Daoyong; Sun, Xiaoming; Chen, H.Y.; Nie, Zhihua; Chen, Zhipei; Zhang, Yong; Zhu, Chaoyi; Qu, Yuhai; Zhu, Jianguo; Wang, Y.D.

doi:10.1016/j.jallcom.2017.09.055

Cited by 23 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Their novel functionalities are only of benefit if their mechanical properties are satisfactory. This is the reason why good shape memory effect and superelasticity are only achieved in either single crystals [ 12 , 13 ] or low dimensional textured polycrystals [ 14 , 15 ], in which reasonable strength and ductility can be guaranteed. It is well known that obtaining good shape memory properties is still challenging in bulk polycrystalline Heusler alloys due to the grain boundary brittleness.…”

Section: Introductionmentioning

confidence: 99%

Grain Size Effect of the γ Phase Precipitation on Martensitic Transformation and Mechanical Properties of Ni–Mn–Sn–Fe Heusler Alloys

et al. 2021

View full text Add to dashboard Cite

Isothermal annealing of a eutectic dual phase Ni–Mn–Sn–Fe alloy was carried out to encourage grain growth and investigate the effects of grain size of the γ phase on the martensitic transformation behaviour and mechanical properties of the alloy. It is found that with the increase of the annealing time, the grain size and volume fraction of the γ phase both increased with the annealing time predominantly by the inter-diffusion of Fe and Sn elements between the γ phase and the Heusler matrix. The isothermal anneals resulted in the decrease of the e/a ratio and suppression of the martensitic transformation of the matrix phase. The fine γ phase microstructure with an average grain size of 0.31 μm showed higher fracture strength and ductility values by 28% and 77% compared to the coarse-grained counterpart with an average grain size of 3.31 μm. The fine dual phase microstructure shows a quasi-linear superelasticity of 4.2% and very small stress hysteresis during cyclic loading, while the coarse dual phase counterpart presents degraded superelasticity of 2.6% and large stress hysteresis. These findings indicate that grain size refinement of the γ phase is an effective approach in improving the mechanical and transformation properties of dual phase Heusler alloys.

show abstract

Section: Introductionmentioning

confidence: 99%

Grain Size Effect of the γ Phase Precipitation on Martensitic Transformation and Mechanical Properties of Ni–Mn–Sn–Fe Heusler Alloys

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The Taylor-Ulitovsky method, which involves the quenching and drawing technique (Chiriac & Ó vá ri, 1996;Vá zquez et al, 2011), has been shown to be a feasible and cost-effective way of fabricating oligocrystallinestructured microwires of conventional SMAs . Several attempts have been made to prepare microwires of MMSMAs using the Taylor-Ulitovsky method (Qu et al, 2017a;Liu et al, 2017;Li et al, 2018;Vega et al, 2012). However, a magnetic field-induced first-order metamagnetic phase transition and large tensile superelasticity have never been simultaneously achieved.…”

Section: Introductionmentioning

confidence: 99%

Magnetic field-induced magnetostructural transition and huge tensile superelasticity in an oligocrystalline Ni–Cu–Co–Mn–In microwire

Chen

Cong

Sun

et al. 2019

Int Union Crystallogr J

View full text Add to dashboard Cite

Meta-magnetic shape-memory alloys combine ferroelastic order with ferromagnetic order and exhibit attractive multifunctional properties, but they are extremely brittle, showing hardly any tensile deformability, which impedes their practical application. Here, for the first time, an Ni–Cu–Co–Mn–In microwire has been developed that simultaneously exhibits a magnetic field-induced first-order meta-magnetic phase transition and huge tensile superelasticity. A temperature-dependent in situ synchrotron high-energy X-ray diffraction investigation reveals that the martensite of this Ni43.7Cu1.5Co5.1Mn36.7In13 microwire shows a monoclinic six-layered modulated structure and the austenite shows a cubic structure. This microwire exhibits an oligocrystalline structure with bamboo grains, which remarkably reduces the strain incompatibility during deformation and martensitic transformation. As a result, huge tensile superelasticity with a recoverable strain of 13% is achieved in the microwire. This huge tensile superelasticity is in agreement with our theoretical calculations based on the crystal structure and lattice correspondence of austenite and martensite and the crystallographic orientation of the grains. Owing to the large magnetization difference between austenite and martensite, a pronounced magnetic field-induced magnetostructural transition is achieved in the microwire, which could give rise to a variety of magnetically driven functional properties. For example, a large magnetocaloric effect with an isothermal entropy change of 12.7 J kg−1 K−1 (under 5 T) is obtained. The realization of magnetic-field- and tensile-stress-induced structural transformations in the microwire may pave the way for exploiting the multifunctional properties under the coupling of magnetic field and stress for applications in miniature multifunctional devices.

show abstract

“…Nickel has been extensively used for coatings to prevent the corrosion of the materials . Moreover, and because of their magnetic properties, several Ni alloys containing mainly Fe, Co, or W have been investigated and progressively incorporated in electronic devices such as sensors or devices for memory storage. − In addition to the interest in nickel in the electronics industry, nickel was also proven to be a good candidate in the design of new catalysts. So, the combination of nickel with other metals like gold or platinum improves the catalytic activity in several reactions of interest.…”

Section: Introductionmentioning

confidence: 99%

Surface Sensitive Nickel Electrodeposition in Deep Eutectic Solvent

Sebastián

Giannotti

Gómez

et al. 2018

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

The first steps of nickel electrodeposition in a deep eutectic solvent (DES) are analysed in detail. Several substrates from glassy carbon to Pt(111) were investigated pointing out the surface sensitivity of the nucleation and growth mechanism. For that, cyclic voltammetry and chronoamperometry, in combination with scanning electron microscopy (SEM), were employed. X-ray diffraction (XRD) and atomic force microscopy (AFM) were used to more deeply analyse the Ni deposition on Pt substrates.In a 0.1 M NiCl 2 + DES solution (at 70ºC), the nickel deposition on glassy carbon takes place within the potential limits of the electrode in the blank solution. Although, the electrochemical window of Pt|DES is considerably shorter than on glassy carbon|DES, it was still sufficient for the nickel deposition. On Pt electrode, the negative potential limit was enlarged while the nickel deposit growed, likely because of the lower catalytic activity of the nickel towards the reduction of the DES. At lower overpotentials, different hydrogenated Ni structures were favoured, most likely because of the DES co-reduction on the Pt substrate. Nanometric metallic nickel grains of rounded shape were obtained in any substrate, as evidenced by the FE-SEM. Passivation phenomena, related to the formation of Ni oxide and Ni hydroxylated species, were observed at high applied overpotentials. At low deposited charge, on Pt(111) the AFM measurements showed the formation of rounded nanometric particles of Ni, which rearranged and formed small triangular arrays at sufficiently low applied overpotential (Scheme 1). This particle pattern was induced by the <111> orientation and related to surface sensitivity of the nickel deposition in DES. The present work provides deep insights into the Ni electrodeposition mechanism in the selected deep eutectic solvent. Scheme 1. Representation of the Ni(II) electrodeposition in DES on Pt(111) and AFM image (2 x 2 µm 2 ) of the Ni clusters.

show abstract

Low-hysteresis tensile superelasticity in a Ni-Co-Mn-Sn magnetic shape memory microwire

Cited by 23 publications

References 31 publications

Grain Size Effect of the γ Phase Precipitation on Martensitic Transformation and Mechanical Properties of Ni–Mn–Sn–Fe Heusler Alloys

Grain Size Effect of the γ Phase Precipitation on Martensitic Transformation and Mechanical Properties of Ni–Mn–Sn–Fe Heusler Alloys

Magnetic field-induced magnetostructural transition and huge tensile superelasticity in an oligocrystalline Ni–Cu–Co–Mn–In microwire

Surface Sensitive Nickel Electrodeposition in Deep Eutectic Solvent

Contact Info

Product

Resources

About