Results 21 to 30 of about 25,521 (248)

An ideal model for stress-induced martensitic transformations in shape-memory alloys [PDF]

open access: yesFracture and Structural Integrity, 2014
In this paper, a novel model for stress-induced martensitic transformations in shape-memory alloys is proposed. Accordingly, the constitutive pseudo-elastic behavior of these materials is described.
Michele Marino
doaj   +3 more sources

Microstructure and Martensitic Transformation Behavior in Thermal Cycled Equiatomic CuZr Shape Memory Alloy

open access: yesMetals, 2019
Equiatomic CuZr alloy undergoes a martensitic transformation from the B2 parent phase to martensitic phases (P21/m and Cm) below 150 °C. We clarified the effect of the thermal cycling on the morphology and crystallography of martensite in equiatomic CuZr
Shota Hisada   +4 more
doaj   +1 more source

Microstructure and phase transformation of Ni-Ti-Fe-Nd quaternary shape memory alloy

open access: yesProceedings of the Mongolian Academy of Sciences, 2019
The effect of rare earth element neodymium (Nd) addition on the microstructure and phase transformation behavior of Ni50Ti47Fe2Nd1 shape memory alloy was investigated by scanning electronic microscope, X-ray diffraction and differential scanning ...
Dovchinvanchig Maashaa
doaj   +1 more source

Shear-induced α → γ transformation in nanoscale Fe-C composite [PDF]

open access: yes, 2006
High-resolution transmission electron microscopy and three-dimensional atom probe observations show clearly that a reverse transformation of body-centred cubic ferrite to face-centred cubic austenite occurs during severe plastic deformation of a ...
Fecht, H.-J.   +4 more
core   +1 more source

Omega transition accompanied by mechanically-induced twinned martensite

open access: yesMaterials Research Express, 2020
We present here an analysis on omega transition process during martensitic transformation. Martensitic transformation occurred during deformation at room temperature, avoiding the influence of auto-tempering on metastable omega phase.
P J Du, Y J Li, R D K Misra, D Wu
doaj   +1 more source

The role of phase interface energy in martensitic transformations: a lattice Monte-Carlo simulation

open access: yes, 2014
To study martensitic phase transformation we use a micromechanical model based on statistical mechanics. Employing lattice Monte-Carlo simulations and realistic material properties for shape-memory alloys (SMA), we investigate the combined influence of ...
Antretter, Thomas   +3 more
core   +3 more sources

Microstructural characterization of AISI 431 martensitic stainless steel laser-deposited coatings [PDF]

open access: yes, 2011
High cooling rates during laser cladding of stainless steels may alter the microstructure and phase constitution of the claddings and consequently change their functional properties.
A Zambon   +22 more
core   +3 more sources

Local atomic arrangement and martensitic transformation in Ni$_{50}$Mn$_{35}$In$_{15}$: An EXAFS Study

open access: yes, 2007
Heusler alloys that undergo martensitic transformation in ferromagnetic state are of increasing scientific and technological interest. These alloys show large magnetic field induced strains upon martensitic phase change thus making it a potential ...
Bhobe P A   +6 more
core   +1 more source

Numerical and experimental analysis of anisotropic damage growth and martensitic phase change due to plastic strain at ambient temperature [PDF]

open access: yesمهندسی مکانیک شریف
This study investigates the anisotropic damage growth and martensitic phase transformation in AISI-316 austenitic stainless steel at room temperature. Initially, tensile and torsion tests were performed on samples at various displacements.
R. Barkhordari   +2 more
doaj   +1 more source

A Phase Field Model for Martensitic Transformations [PDF]

open access: yesPAMM, 2012
AbstractThe martensitic transformation is described using a phase field model which is in mathematical terms the regularization of a sharp interface approach. In this work, up to two martensitic orientation variants are considered. The evolution of microstructure is assumed to follow a time dependent Ginzburg‐Landau equation. The coupled problem of the
Regina Schmitt   +2 more
openaire   +1 more source

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