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Showing 1 to 13 of 13 for “"time-temperature transformation"”.
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Investigation into the transformation products of CD3MN cast duplex stainless steel
<p>The transformation products for CD3MN cast duplex stainless steel (DSS) were investigated between the temperatures of 600 to 9500C. The primary research evaluated the kinetics of sigma ([Sigma]) phase formation by developing the time-temperature-transformation diagram for CD3MN and comparing …
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Cure Kinetics and Processing Parameters of Neat and Reinforced High Performance Epoxy Resins: Evaluation of Techniques
… are followed by shifts in glass transition temperature determined by DSC and temperature-modulated DSC (TMDSC), thermomechanical (TMA) and dynamic mechanical (DMA) analysis and thermally stimulated depolarization (TSD). Changes in viscosity, also indicative of degree of conversion, are …
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Stability of nanostructured : amorphous aluminum-manganese alloys
… alloys have been synthesized using room temperature ionic liquid electrodeposition, by which various nanostructures and dual-phase structures can be created by controlling the Mn solute incorporation level. The manganese exhibits grain boundary segregation in the Al-Mn solid solution in …
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Crystallization of Synthetic Blast Furnace Slags Pertaining to Heat Recovery
… treatment and non-isothermal cooling. Their time-temperature-transformation (TTT) and continuous-cooling-transformation (CCT) diagrams were plotted and compared with each other. Furthermore, kinetic parameters such as the Avrami exponent (n), rate coefficient (K) and effective activation …
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Modelling of Simultaneous Transformations in Steels
… of a steel is often developed by solid-state transformation from austenite. The major transformation products are allotriomorphic ferrite, pearlite, Widmanstatten ferrite, bainite and martensite, differentiated by morphological features, and their nucleation and growth mechanisms. A steel …
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Characterization of Cure Kinetics and Physical Properties of a High Performance, Glass Fiber-Reinforced Epoxy Prepreg and a Novel Fluorine-Modified, Amine-Cured Commercial Epoxy.
… are followed by shifts in glass transition temperature determined by DSC, temperature-modulated DSC (TMDSC), step scan DSC and high speed DSC, thermomechanical (TMA) and dynamic mechanical (DMA) analysis and thermally stimulated depolarization (TSD). Changes in viscosity, also indicative of …
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Thermal rheological analysis of cure process of epoxy prepreg
… with the experimental data, especially at high temperatures. To account for the effect of diffusion on the cure rate, a diffusion factor was introduced into the model. The modified model greatly improved the predicated data at the late stage of cure reaction. The dynamic cure process was …
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Crystallisation Behaviour and Heat Transfer Phenomenon of Fluoride-free Mould Fluxes for Steel Continuous Casting
… 7 degree Celsius/s and the shortest incubation time was 15 s at 1000 degree Celsius. Dominant precipitate was Ca2SiO4 at 950 and 1100 degree Celsius with minor Na2CaSi3O8 and Ca2MgSi2O7. Cuspidine was only found at 950 degree Celsius. For fluoride-free mould fluxes, the effects of CaO/SiO2 …
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A constitutional study of a dual phase steel containing 12% chromium
… The objectives included the detennination of time-temperature-transformation (TTT) diagrams for the transformations between austenite and ferrite and an investigation into the factors controlling these reactions. The austenite decomposition reaction for a high nickel alloy, 3CR12Ni, and the …
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Structure-property relationships of electron beam cured systems containing bis-GMA
… called bis-GMA, is a viscous liquid at room temperature which crosslinks to form a glassy network when a 3 to 5 mil coating is irradiated with sufficient energy. The major parameters which were systematically varied in this study were radiation dosage, dose rate, aging time after irradiation, …
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Energetic Considerations and Structural Characterization of Twinning in Nanowires
… facilitate structural analysis of nanowires. A time-temperature-transformation diagram of platinum nanowires in chemical synthesis was determined to help optimize the fabrication process of the nanowires.
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High Entropy Amorphous and Crystalline Li-Garnet Films for Lithionic Applications
… windows, and non-flammability. However, high-temperature sintering (>1050 °C) is generally required to achieve its highly conductive cubic phase (cLLZO), which raises concerns over processing cost, sustainability, and interface stability with adjacent layers, such as cathodes. Alternative, …
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Investigation of Processing Conditions and Viscoelastic Properties on Frictional Sliding Behavior of Unidirectional Carbon Fiber Epoxy Prepreg
… epoxy prepreg at various contact pressures, temperatures and sliding velocities. Viscoelastic properties such as the complex viscosity (η*), storage modulus (G'), loss modulus (G"), and loss factor (tan δ) were used to determine the critical transition events (such as gelation) during cure. …