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Showing 1 to 7 of 7 for “"Niti alloys"”.
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Investigations Into the Physical Mechanisms That Facilitate Transformation Hysteresis in Shape Memory Alloys
… a growing hysteresis with increasing stress for NiTi alloys.
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The Effect of Stress State and Precipitation on Stress-Induced Martensitic Transformations in Polycrystalline and Single Crystal Shape Memory Alloys: Experiments and Micro-Mechanical Modeling
… stress-induced transformations in aged NiTi single crystals, a micro-mechanical model is used to quantify the stress fields outside perfectly coherent Ti$\sb{11}$Ni$\sb{14}$ precipitates in NiTi. Using the model, the decrease in the orientation dependence of $\sigma\sb{\rm cr}$ is linked …
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Mechanics of Phase Transformation in NiTi Shape Memory Alloys at The Atomistic Scale
During the past decade, Shape Memory Alloys (SMAs), particularly Nickel-Titanium (NiTi) alloys, have received increasing attention mainly because of their promising role to be integrated into multifunctional systems for actuation, morphing, and sensory capabilities in a broad variety of …
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Instrumented Nanoindentation Studies Of Deformation In Shape Memory Alloys
Near equi-atomic nickel titanium (NiTi) shape memory alloys (SMAs) are a class of materials characterized by their unique deformation behavior. In these alloys, deformation mechanisms such as mechanical twinning and stress induced phase transformation between a high symmetry phase (austenite) and a …
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An advanced perspective on twin growth in nickel-titanium
… the attributes of twinning in Nickel-Titanium (NiTi) shape memory alloy. In particular, atomistic mechanisms of twin growth in two different phases of NiTi are characterized with barrier energy in this thesis. In addition, energetics of dislocation twin boundary interactions in a face centered …
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On the thermomechanics of localizing pseudoelastic transformations in NiTi materials and structures
Nearly equiatomic NiTi alloys undergo reversible solid-state transformations around room temperature, which are activated by the application of stress or by modest temperature changes. The forward transformation causes about 6% strain and the release of about 12 kJ/kg of latent heat; both are …
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Design, Fabrication And Testing Of A Shape Memory Alloy Based Cryogenic Thermal Conduction Switch
Shape memory alloys (SMAs) can recover large strains (e.g., up to 8%) by undergoing a temperature-induced phase transformation. This strain recovery can occur against large forces, resulting in their use as actuators. The SMA elements in such actuators integrate both sensory and actuation …