Results 221 to 230 of about 6,423 (259)
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Intermetallics, 2000
Abstract It has been reported that martensite in near-equiatomic NiTi is thermally stabilised after a moderate deformation via martensite reorientation. This work continues the study by investigating the effect of deformation via stress-induced martensitic transformation on the transformation behaviour of the alloy.
Yinong Liu, G.S Tan
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Abstract It has been reported that martensite in near-equiatomic NiTi is thermally stabilised after a moderate deformation via martensite reorientation. This work continues the study by investigating the effect of deformation via stress-induced martensitic transformation on the transformation behaviour of the alloy.
Yinong Liu, G.S Tan
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Acta Materialia, 2010
The stress-induced transformation behavior of retained austenite is considered in this work. With the development of transformation-induced plasticity (TRIP) steels this deformation mode is of growing importance. Twinned martensite structures were calculated using the crystallographic theory of martensite.
A. Creuziger, T. Foecke
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The stress-induced transformation behavior of retained austenite is considered in this work. With the development of transformation-induced plasticity (TRIP) steels this deformation mode is of growing importance. Twinned martensite structures were calculated using the crystallographic theory of martensite.
A. Creuziger, T. Foecke
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Acoustic emission related to stress induced martensitic transformation in β CuZn
Scripta Metallurgica, 1980Hydrogen concentrations were measured in the fracture surface of a fatigued Ti-6Al-4V alloy to determine hydrogen accumulation in the fracture region. (FS)
Caceres, CH +3 more
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Microobservation of stress induced martensitic transformation in CuAlNi single crystals
Acta Metallurgica et Materialia, 1992Abstract Stress-induced martensitic phase transformation of CuAlNi single crystals is observed by use of an in situ optical observation apparatus. The results show that long before the transformation of the parent phase becomes macroscopically noticeable, interfaces arise.
Q. Jiang, H. Xu
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Stress-induced martensitic phase transformation in thin sheets of Nitinol
Acta Materialia, 2007Using the in situ optical technique known as digital image correlation (DIC), full-field quantitative strain maps of localization have been experimentally obtained for the first time in thin sheets of Nitinol. The use of DIC provides new information connecting previous observations on the micro- and macro-scales.
Daly, S. +2 more
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Propagation of the interface in the stress-induced austenite-martensite transformation
Ingenieur-Archiv, 1983The paper contains the analysis of the one-dimensional phenomenological model of the interface, created in a shape memory alloy by the stress-induced austenite-martensite transformation. Making use of the simplified stress-strain relation and the formulae, describing the propagation of the surface of strong discontinuity, we prove that the interface ...
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Crystallography of Stress‐Induced Martensitic Transformations in Partially Stabilized Zirconia
Journal of the American Ceramic Society, 1986The phenomenological theory of martensite crystallography was applied to the tetragonal‐monoclinic transformation in zirconia. Operation of variants of the lattice deformation can lead to a near‐twin orientation relation between different regions of a transformed particle, and if these regions are in the form of plates, as observed, they will fit ...
P. M. KELLY, C. J. BALL
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Stress-induced martensitic transformations and shape memory at nanometer scales
Acta Materialia, 2006Abstract Nickel–titanium (NiTi) shape memory alloys undergo relatively large recoverable inelastic deformations via a stress-induced martensitic phase transformation. Although stress-induced phase transformations in shape memory alloys are well characterized and utilized at micrometer to meter length scales, significant opportunity exists to ...
Frick, C., Lang, T., Spark, K., Gall, K.
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Recoverable stress-induced martensitic transformation in a ferromagnetic CoNiAl alloy
Scripta Materialia, 2003Abstract The stress-induced martensitic transformation characteristics of a new CoNiAl alloy were investigated under compression. Pseudoelasticity, stages of transformation, and thermal cycling under constant stress were revealed. The present CoNiAl alloy is a candidate material not only for magnetic but also for conventional and high-temperature ...
H.E. Karaca +4 more
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An energy criterion for the stress-induced martensitic transformation in a ductile system
Journal of the Mechanics and Physics of Solids, 1994(From the authors' summary.) An energy criterion is developed to calculate the stress-strain behavior of a ductile system involving martensitic transformation under the application of stress. The martensitic inclusions are taken to develop from the ductile austenitic matrix due to the reduction in the Gibbs free energy, which consists of the chemical ...
Bhattacharyya, A., Weng, G. J.
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