A multiphysics phase field model on melting and kinetic superheating of aluminum nanolayer and nanoparticle
نویسندگان
چکیده
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii CHAPTER
منابع مشابه
Phase field simulation of kinetic superheating and melting of aluminum nanolayer irradiated by pico- and femtosecond laser
Two melting mechanisms are reproduced and quantified for superheating and melting of Al nanolayer irradiated by picoand femtosecond laser using the advanced phase-field approach coupled with mechanics and a two-temperature model. At heating rates Q 79:04 K/ps induced by picosecond laser, two-sided barrierless surface melting forms two solid-melt interfaces, which meet near the center of a sampl...
متن کاملInternal stress-induced melting below melting temperature at high-rate laser heating
Articles you may be interested in Phase field simulation of kinetic superheating and melting of aluminum nanolayer irradiated by pico-and femtosecond laser Appl. Highly localized heat generation by femtosecond laser induced plasmon excitation in Ag nanowires Appl. Origin of temperature plateaus in laser-heated diamond anvil cell experiments Ultrafast melting and resolidification of gold particl...
متن کاملCoupled phase field, heat conduction, and elastodynamic simulations of kinetic superheating and nanoscale melting of aluminum nanolayer irradiated by picosecond laser.
An advanced continuum model for nanoscale melting and kinetic superheating of an aluminum nanolayer irradiated by a picosecond laser is formulated. Barrierless nucleation of surface premelting and melting occurs, followed by a propagation of two solid-melt interfaces toward each other and their collision. For a slow heating rate of Q = 0.015 K ps(-1) melting occurs at the equilibrium melting te...
متن کاملnd - m at . m tr l - sc i ] 2 6 Ju n 20 06 Superheating and solid - liquid phase coexistence in nanoparticles with non - melting surfaces
We present a phenomenological model of melting in nanoparticles with facets that are only partially wet by their liquid phase. We show that in this model, as the solid nanoparticle seeks to avoid coexistence with the liquid, the microcanonical melting temperature can exceed the bulk melting point, and that the onset of coexistence is a first-order transition. We show that these results are cons...
متن کاملMelting at the Limit of Superheating
Theories on superheating-melting mostly involve vibrational and mechanical instabilities, catastrophes of entropy, volume and rigidity, and nucleation-based kinetic models. The maximum achievable superheating is dictated by nucleation process of melt in crystals, which in turn depends on material properties and heating rates. We have established the systematics for maximum superheating by incor...
متن کامل