Results 51 to 60 of about 1,681,893 (239)

On the Free Recovery Bending Shape Memory Effect in Powder Metallurgy FeMnSiCrNi

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science, 2021
This paper presents the results of an original experimental study on the training capacity of a powder metallurgy (PM) FeMnSiCrNi shape memory alloy (SMA).
Lenuța CIURCĂ, Bogdan PRICOP, Mihai POPA, Victor Daniel APOSTOL, Leandru-Gheorghe BUJOREANU   +4 more
doaj   +1 more source

Homogenization in magnetic-shape-memory polymer composites

, 2017
Magnetic-shape-memory materials (e.g. specific NiMnGa alloys) react with a large change of shape to the presence of an external magnetic field. As an alternative for the difficult to manifacture single crystal of these alloys we study composite materials
A Braides, A Desimone, A Hubert, A Sozinov, B Tian, B Tian, D Cioranescu, G Allaire, G Pisante, G W Milton, H Hosoda, J Ball, J Feuchtwanger, J Liu, J Liu, K Bhattacharya, K Ullakko, M Pitteri, N Scheerbaum, R Tickle, S Conti, S Conti, S Conti, S Conti, S J Murray, S Kauffmann-Weiss, W Brown   +26 more
core   +1 more source

Entangled single-wire NiTi material: a porous metal with tunable superelastic and shape memory properties

, 2015
NiTi porous materials with unprecedented superelasticity and shape memory were manufactured by self-entangling, compacting and heat treating NiTi wires.
Bouvard, D., Gadot, B., Martinez, O. Riu, Orgéas, L., Rodney, D., Roscoat, S. Rolland du   +5 more
core   +3 more sources

Two-way shape memory effect in (?+?) two-phase Co38Ni33Al29 single crystals [PDF]

, 2005
In the present study, it is shown that the aging in martensite under load is the effective way to create two-way shape memory effect at the martensite start temperature Ms=311 K with the reversible strain of 5 % along the [001]B2-direction in ...
Hoffmann, Dieter, Mans, Torsten Günter, Ritschel, Robert, Rußbüldt, Peter   +3 more
core   +2 more sources

First principles characterization of reversible martensitic transformations

, 2018
Reversible martensitic transformations (MTs) are the origin of many fascinating phenomena, including the famous shape memory effect. In this work, we present a fully ab initio procedure to characterize MTs in alloys and to assess their reversibility ...
Drautz, Ralf, Ferrari, Alberto, Rogal, Jutta, Sangiovanni, Davide G.   +3 more
core   +1 more source

Micromemory effects in shape memory alloys

Il Nuovo Cimento D, 1993
Thermoelastic martensitic transformations (TMT) have been on the stage for several years in connection with shape memory alloys. Interest has recently grown in partial cycling or involving the incomplete reverse transformation in a pre-programmable way.
Airoldi G, Besseghini S, Riva G
openaire   +2 more sources

Modeling the butterfly behavior of SMA actuators using neural networks

Comptes Rendus. Mécanique, 2022
Shape memory alloy (SMA) actuators are an important application of smart materials for robotics. However, the nonlinear behavior of SMA leads to difficulties in real-time simulations using numerical methods.
Hmede, Rodayna, Chapelle, Frédéric, Lapusta, Yuri   +2 more
doaj   +1 more source

Memory effects on descent from nuclear fission barrier [PDF]

, 2001
Non-Markovian transport equations for nuclear large amplitude motion are derived from the collisional kinetic equation. The memory effects are caused by the Fermi surface distortions and depend on the relaxation time.
A. A. Abrikosov, A. Kolomiets, C. J. Pethick, D. Boilley, D. Boilley, D. Kiderlen, D. Vautherin, E. M. Lifshitz, F. A. Ivanyuk, G. Holzwarth, H. A. Kramers, H. Grabert, H. Grabert, H. Hofmann, H. Hofmann, H. Hofmann, H. Hofmann, H. Hofmann, H. S. Köhler, I. Kelson, J. R. Nix, J. R. Nix, J. R. Nix, J. Schirmer, K. Niita, K. T. R. Davies, K. T. R. Davies, L. D. Landau, M. Brack, M. M. Abu-Samreh, R. W. Hasse, S. Ayik, S. Ayik, S. Ayik, S. Ayik, S. Shlomo, S. V. Radionov, V. M. Kolomietz, V. M. Kolomietz, V. M. Kolomietz, V. M. Kolomietz, W. D. Myers, W. Nörenberg, Y. Abe   +43 more
core   +2 more sources

Quantitative Model of Large Magnetostrain Effect in Ferromagnetic Shape Memory Alloys

, 1999
A quantitative model describing large magnetostrain effect observed in several ferromagnetic shape memory alloys such as Ni2MnGa is briefly reported.The paper contains an exact thermodynamic consideration of the mechanical and magnetic properties for a ...
Likhachev, A. A., Ullakko, K.
core   +1 more source

Effect of aging on the martensitic transformation and functional properties of a Ni44.8Ti45.2Hf5Cu5 multi component shape memory alloy

Discover Mechanical Engineering
In this study, a Ni44.8Ti45.2Hf5Cu5 shape memory alloy was fabricated by vacuum arc-melting in a copper mold. The alloy was solution annealed at 1000 °C for 60 min and subsequently aged at a temperature range between 300 °C and 600 °C for different time ...
Sadjad Baradari, Natalia Resnina, Mahmoud Nili-Ahmadabadi   +2 more
doaj   +1 more source