Results 1 to 10 of about 15,204 (234)

Stress‐induced martensitic transformation in polycrystalline alloys [PDF]

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2000
AbstractModern scale transition methods developed in mechanics of materials these last years are successfully applied to model the particular behaviour exhibited by shape memory alloys. Starting from a local kinematical analysis based on crystallographic considerations and determining the thermodynamical forces associated to the martensitic phase ...
Patoor, E., Entemeyer, D., Eberhardt, A., Berveiller, M.   +3 more
openaire   +1 more source

Work hardening behavior of hot-rolled metastable Fe50Co25Ni10Al5Ti5Mo5 medium-entropy alloy: in situ neutron diffraction analysis

Science and Technology of Advanced Materials, 2022
Metastability engineering is a strategy to enhance the strength and ductility of alloys via deliberately lowering phase stability and prompting deformation-induced martensitic transformation. The advantages of the strategy are widely exploited by ferrous
Hyeonseok Kwon, Stefanus Harjo, Takuro Kawasaki, Wu Gong, Sang Guk Jeong, Eun Seong Kim, Praveen Sathiyamoorthi, Hidemi Kato, Hyoung Seop Kim   +8 more
doaj   +1 more source

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

Fracture 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

Effect of Quasi-Hydrostatic Pressure on Deformation Mechanism in Ti-10Mo Alloy

Metals, 2020
The deformation mechanisms of Ti-10Mo (wt.%) alloy subjected to different quasi-hydrostatic pressure values were investigated under constrained compression using stage of high-pressure torsion apparatus.
Baozhen Jiang, Satoshi Emura, Koichi Tsuchiya   +2 more
doaj   +1 more source

Fracture mechanics of pseudoelastic NiTi alloys: review of the research activities carried out at University of Calabria

Fracture and Structural Integrity, 2012
This paper reports a brief review of the research activities on fracture mechanics of nickel-titanium based shape memory alloys carried out at University of Calabria.
C. Maletta, F. Furgiuele, E. Sgambitterra   +2 more
doaj   +3 more sources

Temperature and microstructure dependent tensile behavior of coarse grained superelastic NiTi

Materials & Design, 2023
In this work, effects of temperature and microstructure on tensile behavior of superelastic NiTi wires were analyzed. We analyzed cold-drawn NiTi wires of 1.78 mm that received four different final heat treatments using short direct electrical current ...
E. Alarcon, L. Heller, E. de Prado, J. Kopeček   +3 more
doaj   +1 more source

Further Research on Hardenability of Ti-1023 β Alloy Leading to a New DOE [PDF]

MATEC Web of Conferences, 2020
As part of a treatise on the hardenability of Ti-1023, a summary about the nucleation mechanisms of primary and secondary alpha, the viability of two-step aging, and existence of precipitation-free zones is provided.
Prazak Bohumil
doaj   +1 more source

Stress-induced detwinning and martensite transformation in an austenite Ni–Mn–Ga alloy with martensite cluster under uniaxial loading

IUCrJ, 2019
Stress-induced martensitic detwinning and martensitic transformation during step-wise compression in an austenite Ni–Mn–Ga matrix with a martensite cluster under uniaxial loading have been investigated by electron backscatter diffraction, focusing on the
Long Hou, Ying Niu, Yanchao Dai, Lansong Ba, Yves Fautrelle, Zongbin Li, Bo Yang, Claude Esling, Xi Li   +8 more
doaj   +1 more source

Large Elastocaloric Effect Driven by Low Stress Induced in [001]-Oriented Polycrystalline Co_51.6V_31.4Ga₁₇ Alloy

Magnetochemistry, 2022
In this work, we have studied the elastocaloric effect in directionally solidified Co51.6V31.4Ga17 alloys with a strong [001] preferred orientation. The entropy change for thermal-induced martensitic transformation is determined as 19.6 J kg−1 K−1.
Jian Liu, Jing He, Shengcan Ma
doaj   +1 more source

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