Results 41 to 50 of about 4,302 (276)

ECAE processed NiTi shape memory alloy [PDF]

Materials Research, 2014
The current work evaluated the microstructures and martensitic transformation temperatures of NiTi shape memory alloy (SMA) deformed by equal channel angular extrusion (ECAE).
Fernanda Lídia Carvalho Lucas, Vanessa Guido, Karine Andrea Käfer, Heide Heloise Bernardi, Jorge Otubo   +4 more
doaj   +1 more source

Amorphous martensite in β-Ti alloys

Nature Communications, 2018
Displacive martensitic transformations through lattice distortion usually involve a change from one crystal structure to another. Here however, the authors “melt” metastable Ti alloys during cooling and show that a martensitic transformation can lead to ...
Long Zhang, Haifeng Zhang, Xiaobing Ren, Jürgen Eckert, Yandong Wang, Zhengwang Zhu, Thomas Gemming, Simon Pauly   +7 more
doaj   +1 more source

All-d-metal equiatomic quaternary Heusler hypothetical alloys ZnCdTMn (T = Fe, Ru, Os, Rh, Ir, Ni, Pd, Pt): A first-principle investigation of electronic structures, magnetism, and possible martensitic transformations

Results in Physics, 2018
A new series of Zinc-based all-d-metal equiatomic quaternary Heusler hypothetical alloys ZnCdTMn (T = Fe, Ru, Os, Rh, Ir, Ni, Pd, Pt) were designed, and their ground state, electronic structures, magnetism, and possible martensitic transformations, as ...
Yilin Han, Mengxin Wu, Minquan Kuang, Tie Yang, Xuebin Chen, Xiaotian Wang   +5 more
doaj   +1 more source

Martensitic transformations: First-principles calculations combined with molecular-dynamics simulations

, 1998
. Results are presented of first-principles total-energy calculations and molecular-dynamics simulations of structural transformations in magnetic transition metal alloys like Fe 1\Gammax Ni x . While first-principles calculations allow to identify those
K. Kadau, Martensitic Transformations First-principles Calculations, H. C. Herper, P. Entel, E. Hoffmann, R. Meyer   +5 more
core   +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

Three-dimensional model of martensitic transformations with elasto-plastic effects [PDF]

, 2010
Martensitic transformations with elasto-plastic effects caused by the formation of dislocations in a parent austenite phase are studied by using a phase-field description.
Emmerich, H, Kundin, Julia, Kundin, J, Emmerich, Heike, Zimmer, Johannes   +4 more
core   +1 more source

Acoustic emission characterization of sliding wear under condition of direct and inverse transformations in low-temperature degradation aged Y-TZP and Y-TZP-AL2O3

Friction, 2018
In this research, results of the investigation of the sliding friction and wear of yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) and Y-TZP-Al2O3 samples preliminarily subjected to low-temperature degradation are reported.
Nikolai L. Savchenko, Andrey V. Filippov, Sergei Yu Tarasov, Andrey I. Dmitriev, Evgeny V. Shilko, Aleksandr S. Grigoriev   +5 more
doaj   +1 more source

The Effect of Thermal Treatment on Microstructure and Thermal-Induced Martensitic Transformations in Ni₄₄Fe₁₉Ga₂₇Co₁₀ Single Crystals

Metals, 2022
Heat treatments of single crystals of Ni44Fe19Ga27Co10 (at.%) shape memory alloys cause various microstructures of the high-temperature phase. The nanodomain structure, consisting of regions of the L21- and B2-phases, and nanosized particles are the main
Ekaterina E. Timofeeva, Elena Yu. Panchenko, Maria V. Zherdeva, Aida B. Tokhmetova, Nikita Yu. Surikov, Yuriy I. Chumlyakov, Ibrahim Karaman   +6 more
doaj   +1 more source

Size Effects in Hysteresis of Reversible Martensitic Transformations [PDF]

, 2021
Martensitic transformations are diffusionless phase transformations, which have been observed in metals, ceramics, and electronic oxides. They are responsible for multifunctional behavior due to changes in shape, magnetization, and enthalpy associated ...
Zhang, Yijia
core  

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source