Results 11 to 20 of about 26,124 (259)

Heterogeneous Nucleation Mechanisms in Systems with Large Lattice Misfit Demonstrated by the Pb(l)/Cu(s) System

open access: yesMetals, 2022
Our current understanding of heterogeneous nucleation has been largely confined to the classical nucleation theory (CNT) that was postulated over 100 years ago based on a thermodynamic approach.
Hua Men, Zhongyun Fan
doaj   +1 more source

Deposition freezing, pore condensation freezing and adsorption: three processes, one description? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2023
Heterogeneous ice nucleation impacts the hydrological cycle and climate through affecting cloud microphysical state and radiative properties. Despite decades of research, a quantitative description and understanding of heterogeneous ice nucleation ...
M. Lbadaoui-Darvas   +4 more
doaj   +1 more source

Engineering Heterogeneous Nucleation during Solidification of Multiphase Cast Alloys: An Overview

open access: yesMetals, 2023
The theory of heterogeneous nucleation was initially developed as a part of condensed matter physics, and later it was used as an important engineering tool to design metallurgical processes.
Simon N. Lekakh, Jingjing Qing
doaj   +1 more source

A New Atomistic Mechanism for Heterogeneous Nucleation in the Systems with Negative Lattice Misfit: Creating a 2D Template for Crystal Growth

open access: yesMetals, 2021
Heterogeneous nucleation is a widespread phenomenon in both nature and technology. However, our current understanding is largely confined to the classical nucleation theory (CNT) postulated over a century ago, in which heterogeneous nucleation occurs ...
Zhongyun Fan   +3 more
doaj   +1 more source

Single-bubble dynamics in nanopores: Transition between homogeneous and heterogeneous nucleation

open access: yesPhysical Review Research, 2020
When applying a voltage bias across a thin nanopore, localized Joule heating can lead to single-bubble nucleation, offering a unique platform for studying nanoscale bubble behavior, which is still poorly understood.
Soumyadeep Paul   +6 more
doaj   +1 more source

Grain Initiation and Grain Refinement: An Overview

open access: yesMetals, 2022
Heterogeneous nucleation and grain initiation are two different processes in early-stage solidification (ESS), although both are deterministic. Heterogeneous nucleation refers to the formation of a 2-dimensional (2D) nucleus (a crystal plane of the solid)
Zhongyun Fan, Feng Gao
doaj   +1 more source

Microstructural Stability of Ti based Composites Fabricated by Spark Plasma Sintering [PDF]

open access: yesMATEC Web of Conferences, 2020
In our previous study, the effects of TiC heterogeneous nucleation site particles on formability and microstructure of additive manufactured (AMed) Ti-6Al-4V products were studied.
Watanabe Yoshimi   +3 more
doaj   +1 more source

Nucleation mechanisms of equiaxed grains in the fusion zone of aluminum-lithium alloys by laser welding

open access: yesJournal of Materials Research and Technology, 2021
The formation of different microstructures in aluminum-lithium alloys welding joints by laser welding has not been fully understood at the moment. In this study, the nucleation mechanisms of equiaxed grains in the fusion zone of aluminum-lithium alloys ...
Chu Han   +5 more
doaj   +1 more source

Heterogeneous nucleation in the low-barrier regime [PDF]

open access: yesPhysical Review E, 2013
In simulations of the 2D Ising model, we examine heterogeneous nucleation induced by a small impurity consisting of a line of $l$ fixed spins. As $l$ increases, we identify a limit of stability beyond which the metastable phase is not defined. We evaluate the free energy barrier for nucleation of the stable phase, and show that contrary to expectation,
Scheifele, Benjamin   +3 more
openaire   +3 more sources

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