Results 11 to 20 of about 641,862 (248)

Theory and Model for Martensitic Transformations [PDF]

open access: yesPhysical Review Letters, 1986
Martensitic transformations are shown to be driven by the interplay between two fluctuating strain components. No soft mode is needed, but a central peak occurs representing the dynamics of strain clusters. A two-dimensional magnetic-analog model with the martensitic-transition symmetry is constructed and analyzed by computer simulation and by a theory
Lindgård, Per-Anker, Mouritsen, Ole G.
openaire   +4 more sources

Crystal symmetry and the reversibility of martensitic transformations [PDF]

open access: yesNature, 2004
Martensitic transformations are diffusionless, solid-to-solid phase transitions, and have been observed in metals, alloys, ceramics and proteins. They are characterized by a rapid change of crystal structure, accompanied by the development of a rich microstructure.
BHATTACHARYA K.   +3 more
openaire   +6 more sources

A New Ordered Transformation-Induced Plasticity Enables Exceptional Strength and Ductility in a B2 Medium-Entropy Alloy. [PDF]

open access: yesAdv Sci (Weinh)
A novel B2‐ordered Ti‐Zr‐V‐Al medium‐entropy intermetallic is developed through controlled metastability engineering, which activates an ordered TRIP effect via a new B2→D019‐α2 transformation with a distinctive {0001}α2//{110}B2, <11‐20>α2//<100>B2 orientation relationship. This alloy achieves an elongation of ∼7%, a strength of ∼1.1 GPa, and superior
Li C   +8 more
europepmc   +2 more sources

Martensitic and inter-martensitic transformations in magnetocaloric Ni2.15Mn0.85Ga Heusler alloy [PDF]

open access: yes, 2021
The entropy changes in successive martensitic phase transformations in Ni-Mn-Ga Heusler alloys can be used to realize enhanced magnetocaloric properties. A detailed study of phase transformations of one such alloy, Ni2.15Mn0.85Ga (Δ Q =4900 J/kg at 343 K,
Koledov, V.   +18 more
core   +1 more source

Martensitic transformation in zirconiaPart II. Martensite growth [PDF]

open access: yesActa Materialia, 2004
23 pages, 11 ...
Deville, Sylvain   +2 more
openaire   +2 more sources

A Revisit to the Notation of Martensitic Crystallography

open access: yesCrystals, 2018
As one of the most successful crystallographic theories for phase transformations, martensitic crystallography has been widely applied in understanding and predicting the microstructural features associated with structural phase transformations.
Yipeng Gao
doaj   +1 more source

Advances in martensitic transformations in Cu-based shape memory alloys achieved by in situ neutron and synchrotron X-ray diffraction methods [PDF]

open access: yes, 2012
This article deals with the application of several X-ray and neutron diffraction methods to investigate the mechanics of a stress induced martensitic transformation in Cu-based shape memory alloy polycrystals. It puts experimental results obtained by two
Sophie Berveiller   +7 more
core   +1 more source

The Stability of NiTi shape memory alloys and actuator applications

open access: yes, 1999
Recent research and development in the area of shape memory alloys (SMA) continues to yield novel and unique results. Of the alloys that display the effect NiTi alloys have found the most commercial interest resulting in a number of niche applications ...
Morgan, Neil
core   +4 more sources

Interplay of Martensitic Phase Transformation and Plastic Slip in Polycrystals [PDF]

open access: yes, 2013
Inspired by key experimental and analytical results regarding Shape Memory Alloys (SMAs), we propose a modelling framework to explore the interplay between martensitic phase transformations and plastic slip in polycrystalline materials, with an eye ...
Richards, Andrew Walter
core   +1 more source

A constitutive model for analyzing martensite formation in austenitic steels deforming at high strain rates [PDF]

open access: yes, 2012
This study presents a constitutive model for steels exhibiting SIMT, based on previous seminal works, and the corresponding methodology to estimate their parameters.
FERNANDEZ-SAEZ, José   +5 more
core   +1 more source

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