Results 21 to 30 of about 898 (243)

Kinetics and the Effect of Thermal Treatments on the Martensitic Transformation and Magnetic Properties in Ni₄₉Mn₃₂Ga₁₉ Ferromagnetic Shape Memory Ribbons

Magnetochemistry, 2022
In our work, the kinetics of martensitic transformations and the influence of thermal treatments on martensitic transformations, as well as the related magnetic properties of the Ni49Mn32Ga19 ferromagnetic shape memory melt-spun ribbons, have been ...
Felicia Tolea, Bogdan Popescu, Cristina Bartha, Monica Enculescu, Mugurel Tolea, Mihaela Sofronie   +5 more
doaj   +1 more source

Entropy Change during Martensitic Transformation in Ni50−xCoxMn50−yAly Metamagnetic Shape Memory Alloys

Entropy, 2014
Specific heat was systematically measured by the heat flow method in Ni50-xCoxMn50-yAly metamagnetic shape memory alloys near the martensitic transformation temperatures. Martensitic transformation and ferromagnetic–paramagnetic transition for the parent
Xiao Xu, Wataru Ito, Takeshi Kanomata, Ryosuke Kainuma   +3 more
doaj   +1 more source

Mechanical and Wear Properties of CoNiAlSiSb and CoNiAlSiIn Ferromagnetic Shape Memory Alloys: An Experimental Assessment

Hittite Journal of Science and Engineering, 2023
CoNiAl-based ferromagnetic shape memory alloys (FSMAs) are used in various engineering fields but still, need to be improved for tribological applications.
Yusuf Kanca
doaj   +1 more source

Coexisting Multiple Martensites in Ni_57−xMn_21+xGa₂₂ Ferromagnetic Shape Memory Alloys: Crystal Structure and Phase Transition

Metals, 2021
A comprehensive study of the crystal structure and phase transition as a function of temperature and composition in Ni57−xMn21+xGa22 (x = 0, 2, 4, 5.5, 7, 8) (at.
Lian Huang, Daoyong Cong, Mingguang Wang, Yandong Wang   +3 more
doaj   +1 more source

Acoustic Emissions during Structural Changes in Shape Memory Alloys

Metals, 2019
Structural changes (martensitic transformation, rearrangements of martensitic variants) in shape memory alloys have an intermittent character that is accompanied by the emission of different (thermal, acoustic, and magnetic) noises, which are ...
Dezső László Beke, Lajos Daróczi, László Zoltán Tóth, Melinda Kalmárné Bolgár, Nora Mohareb Samy, Anikó Hudák   +5 more
doaj   +1 more source

Design of Ferromagnetic Shape Memory Alloy Composites [PDF]

Journal of Composite Materials, 2004
Ferromagnetic shape memory alloy (FSMA) composites composed of a ferromagnetic material and a shape memory alloy (SMA) are key material systems for fast-responsive and compact actuators. The function of ferromagnetic material is to induce magnetic force which is then used to induce the stress in the SMA, resulting in the stress-induced marten site ...
Masahiro Kusaka, Minoru Taya
openaire   +1 more source

Co and In Doped Ni-Mn-Ga Magnetic Shape Memory Alloys: A Thorough Structural, Magnetic and Magnetocaloric Study

Entropy, 2014
In Ni-Mn-Ga ferromagnetic shape memory alloys, Co-doping plays a major role in determining a peculiar phase diagram where, besides a change in the critical temperatures, a change of number, order and nature of phase transitions (e.g., from ferromagnetic ...
Simone Fabbrici, Giacomo Porcari, Francesco Cugini, Massimo Solzi, Jiri Kamarad, Zdenek Arnold, Riccardo Cabassi, Franca Albertini   +7 more
doaj   +1 more source

Martensitic Transition, Magnetic, Microstructural and Exchange Bias Properties of Melt Spun Ribbons of Mn-Ni-Sn Shape Memory Heusler Alloy

Frontiers in Materials, 2020
In the present report, we have studied the structural, microstructural, magnetic, exchange bias (EB) properties and magnetoresistance (MR) in Mn rich (Mn at.
Jyoti Sharma, K. G. Suresh, M. Manivel Raja, Pravin Walke   +3 more
doaj   +1 more source

Martensitic transformation, magnetic and magnetocaloric properties of Ni–Mn–Fe–Sn Heusler ribbons

Journal of Materials Research and Technology, 2021
Melt-spun ribbons of nominal composition Ni50Mn36-xFexSn14 (x = 0, 2, and 3) were prepared by melt-spinning. The alloys undergo a martensitic transformation from L21 austenite to an orthorhombic 4O martensite on cooling, as determined by X-ray powder ...
A. Deltell, Abd El-Moez A. Mohamed, P. Álvarez-Alonso, M. Ipatov, J.P. Andrés, J.A. González, T. Sánchez, A. Zhukov, M.L. Escoda, J.J. Suñol, R. López Antón   +10 more
doaj   +1 more source

Transformation Temperatures and Electrochemical behavior of Polycrystalline Fe-Doped Ni-Mn-Ga and Co-Ni-Ga Alloys

International Journal of Electrochemical Science, 2018
The effect of Fe addition on martensitic transformation temperatures and electrochemical behavior was studied in polycrystalline Ni51.4Mn24.8-XGa23.8FeX alloys (1˂x˂2.2) and Co38.3Ni32.1Ga29.6 as alternative to Ni-Mn-Ga alloys which are used as ...
M. Sanchez-Carrillo, J.P. Flores-de los Rios, C.G. Nava-Dino, H. Flores-Zuñiga, R. Narro-Garcia, M.C. Maldonado-Orozco, F.H. Estupiñan-Lopez, J.G. Chacon-Nava   +7 more
doaj   +1 more source