Results 11 to 20 of about 4,302 (194)

Magnetically induced reorientation of martensite variants in constrained epitaxial Ni–Mn–Ga films grown on MgO(001)

New Journal of Physics, 2008
Magnetically induced reorientation (MIR) is observed in epitaxial orthorhombic Ni-Mn-Ga films. Ni-Mn-Ga films have been grown epitaxially on heated MgO(001) substrates in the cubic austenite state. The unit cell is rotated by 45 relative to the MgO cell. The growth, structure texture and anisotropic magnetic properties of these films are described. The
M Thomas, O Heczko, J Buschbeck, U K Rößler, J McCord, N Scheerbaum, L Schultz, S Fähler   +7 more
openaire   +2 more sources

Enhancing shape recoverable ratio in (Ni50.1Ti34.9Hf15)85Nb15 high-temperature shape memory alloy by thermal-mechanical treatments

Materials Research Letters
The low shape recoverable ratio in NiTiHf high-temperature shape memory alloys was mainly attributed to dislocation generation due to low matrix strength.
Ji Zhang, Zheng Xiang, Qin Yang, Qichao Fan, Shuke Huang, Jie Chen   +5 more
doaj   +2 more sources

Acoustic Emission During Rubber-like Deformation in Ni₅₁Fe₁₈Ga₂₇Co₄ Single Crystalline Shape Memory Alloys

Metals
Acoustic emission, AE, belonging to a rubber-like deformation in a martensitic state after the stabilization aging of the stress-induced martensite (SIM aging) of Ni51Fe18Ga27Co4 single crystals in compression, were investigated.
Lajos Daróczi, Sarah M. Kamel, László Z. Tóth, Elena Yu. Panchenko, Yuri I. Chumljakov, Dezső L. Beke   +5 more
doaj   +2 more sources

Effects of volume fraction between single crystal Ni-Mn-Ga ferromagnetic shape memory alloy and silicone rubber on the martensite variant reorientation

Journal of Alloys and Compounds, 2022
Wan–Ting Chiu, Akihito Goto, Masaki Tahara, Tomonari Inamura, Hideki Hosoda   +4 more
openaire   +2 more sources

Orientation-Dependent Phase Transformation Pathways Enabling Superior Superelastic and Elastocaloric Performance of NiTi Alloys. [PDF]

Adv Sci (Weinh)
By integrating simulations and experiments, the preferred (001) crystallographic texture promotes reversible martensite formation through variant selection, enhancing both superelastic and elastocaloric performance. This work provides fundamental guidelines for designing high‐efficiency NiTi‐based functional materials. Abstract Developing elastocaloric
Lu J, Aziz M, Li H, Zhang C, Huang Z, Chen F.   +5 more
europepmc   +2 more sources

Overcoming the Damping-Elasticity Paradox via 3D-Printed NiTiSn Nanocomposite. [PDF]

Adv Sci (Weinh)
Here a 3D‐printed nanoeutectic alloy is designed to exhibit a record‐breaking combination of exceptional damping capacity (tanδ > 0.10) and elastic strain exceeding 4.5% at a high stress ≈1500 MPa, overcoming the damping‐elasticity paradox in high damping alloys.
Feng B, Liu H, Shen H, Yang Y, Guo F, Cui L, Ren Y, Chen J, Huang S, Xiao Y, Zhang Z, Zong H, Liu Y, Hao S.   +13 more
europepmc   +2 more sources

Microstructural Model of Magnetic and Deformation Behavior of Single Crystals and Polycrystals of Ferromagnetic Shape Memory Alloy

Magnetochemistry, 2023
In this article, a microstructural model of the Heusler alloy with the shape memory effect caused by the application of an external magnetic field is constructed.
Anatoli A. Rogovoy, Olga S. Stolbova
doaj   +1 more source

Magnetic superelasticity and inverse magnetocaloric effect in Ni-Mn-In [PDF]

, 2007
Applying a magnetic field to a ferromagnetic Ni$_{50}$Mn$_{34}$In$_{16}$ alloy in the martensitic state induces a structural phase transition to the austenitic state.
Antoni Planes, Bachir Ouladdiaf, Eberhard F. Wassermann, Emmanuelle Suard, Eyüp Duman, K. Kakeshita, Lluís Mañosa, Mehmet Acet, Thorsten Krenke, Xavier Moya   +9 more
core   +6 more sources

Tensile Deformation of B19′ Martensite in Nanocrystalline NiTi Wires

Shape Memory and Superelasticity, 2023
Deformation mechanisms activated during tensile deformation of nanocrystalline NiTi wire in martensite state were investigated by combination of two experimental methods: (i) analysis of the evolution of martensite-variant microstructures in grains of ...
P. Šittner, O. Molnárová, X. Bian, L. Heller, H. Seiner   +4 more
semanticscholar   +1 more source

A micromechanics inspired constitutive model for shape-memory alloys: the one-dimensional case [PDF]

, 2007
This paper presents a constitutive model for shape-memory alloys that builds on ideas generated from recent micromechanical studies of the underlying microstructure. The presentation here is in one dimension.
Bhattacharya, Kaushik, Sadjadpour, Amir
core   +1 more source