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Showing 1 to 12 of 12 for “"phase transformation kinetics"”.
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Phase behavior and phase transformation kinetics during electrochemical cycling of lithium transition metal olivine compounds
… Li-ion transport during the LiFePO4/FePO4 two-phase transformation during the charge-discharge process. This results initially in poor rate capability and making the practical utility of these compounds unclear. Numerous studies have attributed the rate capability of olivines purely to chemical …
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Combined effects of phosphorus and carbon on hardenability and phase transformation kinetics in 41xx steels, The
Includes bibliographical references.
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Process modeling for solidification microstructure and transient thermal stresses in laser aided DMD process
… Consequently, the effects of solid state phase transformations cannot be neglected. A complete model that provides a quantitative relationship between process parameters, phase transformation kinetics, solidification parameters, thermal stresses and microstructure is highly desirable. This …
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The constitutive modeling of shape memory alloys
… based on basic concepts of thermodynamics and phase transformation kinetics. Compared with other developed constitutive relations, this thermomechanical constitutive relation not only reflects the physical essence of shape memory alloys, i.e., the martensitic phase transformation involved, but …
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High-strength transformation-induced plasticity steels with reverted interlath austenite
… methods are applied to increase the reversion kinetics: (i) changing the reversion mechanism from diffusive to displacive; (ii) changing the alloy composition to promote diffusive transformation. To promote local displacive austenite reversion, the enrichment of austenite stabilizer at the …
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Metallic MoS2 Nanosheets for Lithium-Sulfur Batteries
… thermal stability of the meta-stable metallic 1T phase, preserving it up to 250 °C in dry air—well above the conventional phase transformation temperature of ~100 °C. We establish that moisture is the primary degradation factor, enabling conventional fabrication methods in dry-room conditions …
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Thermal expansion and phase transformation behavior in the rare-earth titanate system
… CTEAS for the cubic, orthorhombic, and hexagonal phases. In the cubic phase, the thermal expansion behavior was found to increase as expected with an increase in thermal vibrations. The orthorhombic phase exhibited an interesting shift from an expanding c-axis to one which contracted. Subsequent …
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Computational framework for metastable materials discovery: integrating kinetics and accurate properties
… to understand their realizability, their phase transformation kinetics to determine if they are long-lived, and their properties to understand their technological relevance. The realizability and thermodynamics are assessed via ab initio random structure sampling, while kinetics are …
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Atomic-Scale Design at the 2D/3D Interface using Electron Microscopy
… such as growth rates, diffusion phenomena, phase transformation kinetics, strain relaxation mechanisms, and defect formation. The observation of such atomic-scale processes allows us to develop a set of fundamental design rules for building ‘designer materials’ atom-by-atom with tailored …
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Modelling of Microstructure Development in Silicon-containing Bainitic Free-machining Steels
… shape. The theories of all the major solid state phase transformations involved in steel are reviewed in chapter 2. The theory of the simultaneous transformation model is presented in chapter 3.uu A recalescence model dealing with the heat of reaction has been developed in chapter 5 for bar-shaped …
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In-Situ Investigations of Calcium-Magnesium-Aluminosilicates (CMAS) Infiltration Effects on Thermal Barrier Coatings Under Extreme Environments Replicating Jet Engines
… evolution of CMAS infiltration and its reaction kinetics under replicated service conditions and engine environments during operation. In this research, in-situ synchrotron X-ray diffraction measurements were leveraged for the high temporal and spatial resolution it offers, to enable the first …