Results 31 to 40 of about 3,389 (193)

Achieving Giant Magnetically Induced Reorientation of Martensitic Variants in Magnetic Shape‐Memory Ni–Mn–Ga Films by Microstructure Engineering

Advanced Materials, 2015
Giant magnetically induced twin variant reorientation, comparable in intensity with bulk single crystals, is obtained in epitaxial magnetic shape-memory thin films. It is found to be tunable in intensity and spatial response by the fine control of microstructural patterns at the nanoscopic and microscopic scales.
Ranzieri P, Campanini M, Fabbrici S, Nasi L, Casoli F, Cabassi R, Buffagni E, Grillo V, Magen C, Celegato F, Barrera G, Tiberto P, Albertini F   +12 more
openaire   +4 more sources

Study of Non-Homogeneity of Magnetic Field Distribution in Single-Crystal Ni-Mn-Ga Magnetic Shape Memory Element in Actuators due to its Anisotropic Twinned Microstructure [PDF]

, 2016
Magnetic shape memory (MSM) alloys are relatively new and very promising “smart” materials which respond to magnetic fields and exhibit the shape memory effect at room temperature. Maximum strain varies from 6 to 12% of the MSM element’s length depending
Gabdullin, N, Khan, S.
core   +1 more source

Atomic scale mechanism of reorientation induced plasticity in titanium alloys - experimental and first principles investigation of the mobile {134‾1} interfaces

Materials & Design
Recent experiments identified a new type of stress induced structural transformation allowing to combine high strength, great work hardening and good ductility in multiphase Ti alloys.
P. Kwasniak, O. Dumas, L. Malet, M. Muzyk, M.R. Zemła, S. Godet, F. Prima   +6 more
doaj   +1 more source

Modelling Rearrangement Process of Martensite Platelets in a Magnetic Shape Memory Alloy Ni2MnGa Single Crystal under Magnetic Field and (or) Stress Action

, 2007
International audienceThe aim of the paper is the modelling of the rearrangement process between martensite variants in order to use Magnetic alloys (MSMs) as actuators. In the framework of the thermodynamic of irreversible processes, an efficient choice
Abadie, Joël, Chaillet, Nicolas, Gauthier, Jean-Yves, Hubert, Arnaud, Lexcellent, Christian   +4 more
core   +4 more sources

A micromechanics-inspired constitutive model for shape-memory alloys [PDF]

, 2007
This paper presents a three-dimensional constitutive model for shape-memory alloys that generalizes the one-dimensional model presented earlier (Sadjadpour and Bhattacharya 2007 Smart Mater. Struct. 16 S51–62).
Bhattacharya, Kaushik, Sadjadpour, Amir
core   +2 more sources

Orientation‐Dependent Phase Transformation Pathways Enabling Superior Superelastic and Elastocaloric Performance of NiTi Alloys

Advanced Science, EarlyView.
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
Jiaqi Lu, Muhammad Aziz, Hao Li, Chi Zhang, Zhifeng Huang, Fei Chen   +5 more
wiley   +1 more source

Jahn-Teller like origin of the tetragonal distortion in disordered Fe-Pd magnetic shape memory alloys

, 2008
The electronic structure and magnetic properties of disordered Fe$_{x}$Pd$_{100-x}$ alloys $(50 < x < 85)$ are investigated in the framework of density functional theory using the full potential local orbital method (FPLO).
Koepernik, Klaus, Nitzsche, Ulrike, Opahle, Ingo, Richter, Manuel   +3 more
core   +1 more source

Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials

Advanced Science, EarlyView.
ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu, Chaochao Dun, Jeffrey J. Urban, Mark T. Swihart   +3 more
wiley   +1 more source

Analytical modeling of the shape memory effect in SMA beams with rectangular cross section under reversed pure bending

Journal of Intelligent Materials Systems and Structures, 2021
An analytical model is developed for a prismatic SMA beam with rectangular cross section subjected to alternating bending at temperature below the austenitic transformations.
E. Radi
semanticscholar   +1 more source

Twin‐Wire In Situ Additive Manufacturing of NiTiNb Eutectic Alloys: Eliminating Unmelted Nb Particles and Tailored Superelasticity

Rare Metals, EarlyView.
ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang, Bao‐Xian Su, Chen Liu, Zhe Li, Zhi‐Wen Li, Meng‐Hao Zhong, Bao Ding, Rui‐Run Chen, Liang Wang, Yan‐Qing Su   +9 more
wiley   +1 more source