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Showing 1 to 10 of 10 for “"Martensitic Transformations"”.
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Autocatalysis of martensitic transformations.
Thesis. 1977. Sc.D.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Martensitic transformations in high magnetic fields.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Metallurgy and Materials Science, 1973
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Fatigue and Martensitic Transformations of Stainless Steel
Made available in DSpace on 2014-12-12T01:04:05Z (GMT). No. of bitstreams: 1 7309946.pdf: 2373968 bytes, checksum: 5a1f5150b210643154c1f3a7da6e3957 (MD5) Previous issue date: 1972
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Thermodynamic modeling of martensitic transformations in shape memory alloys.
… memory alloys (SMAs) are due to solid-to-solid martensitic transformations (MTs) which correspond to a lattice level instability of the crystal structure. Currently, there exists a shortage of material models that can capture the details of lattice level MTs occurring in SMAs. In the first part …
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Mesoscale Models for Stacking Faults, Deformation Twins and Martensitic Transformations: Linking Atomistics to Continuum
Finally, we extend the present work to martensitic transformations and determine the energy pathway for B2→B19 transformation in NiTi. Based on our ab initio DFT calculations, we propose a combined distortion-shuffle pathway for B2→B19 transformation in NiTi. Our results indicate that in …
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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
To properly understand 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 …
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Interface-Tracking by the Face-Offsetting Method for Martensitic Transformation Simulations
Understanding martensitic transformations (diffusionless, solid-solid phase transformations) is instrumental in the design of new low hysteresis alloys with unusual properties. Restricting attention to antiplane shear, we use finite element analysis to simulate the twinning (a special type of …
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Shape memory ceramics in small volumes
Shape memory ceramics rely on martensitic transformations which are similar to those found in metallic shape memory materials, but ceramics offer several advantages over metals such as higher operating temperatures and larger transformation stresses. However, polycrystalline shape memory ceramics …
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Characterization of Stresses and Strains Involved in the Martensitic Phase Transformations
… in the automotive industry, where strain-induced martensitic transformations, associated plasticity and work hardening, enhance both the strength and ductility of the material. This has enhanced both the passenger safety (improved crash-performance) and fuel efficiency as less material is consumed …
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Size Effects in Shape Memory Ceramics
… increased the number of thermally induced martensitic transformation cycles from 5 in bulk materials out to at least 125. The tetragonal-to-monoclinic transformation behavior of yttria-doped zirconia in polycrystalline and single crystalline forms were compared over many transformation …