Journal ArticleDOI
Nucleation in undercooled liquids
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In this paper, the authors used fine (10-20 μm) droplet samples to obtain a substantial increase in undercooling to the range (0.3−0.4)Tm during slow cooling.About:
This article is published in Materials Science and Engineering.The article was published on 1984-07-01. It has received 252 citations till now. The article focuses on the topics: Nucleation & Classical nucleation theory.read more
Citations
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Journal ArticleDOI
Processing of Bulk Metallic Glass
TL;DR: Unique among metal processing methods, TPF utilizes the dramatic softening exhibited by a BMG as it approaches its glass-transition temperature and decouples the rapid cooling required to form a glass from the forming step.
Book ChapterDOI
Crystal Nucleation in Liquids and Glasses
TL;DR: In this paper, the authors focus on measurements and theories pertaining to homogeneous nucleation under cooled liquids and glasses that transform to phases of the same composition, and incorporate time-dependent nucleation and the interface kinetics into the field-theoretic approaches to give theories that are as widely applicable and, hence, testable as the classical theory.
Journal ArticleDOI
Non-equilibrium solidification of undercooled metallic metls
TL;DR: In this paper, a review of the state-of-the-art in this field is presented, with special emphasis on the conditions of the formation of metastable states, such as metastable crystalline metals, quasi-crystals, metallic glasses, supersaturated solutions and grain-refined materials.
Journal ArticleDOI
Correlation between solidification parameters and weld microstructures
Stan A David,John Michael Vitek +1 more
TL;DR: In this article, a comprehensive review of the solidification behavior of a weld pool incorporating recent advances in solidification theories is provided, including basic principles from ingot, single crystal, and rapid solidification processes.
Journal ArticleDOI
Containerless processing in the study of metallic melts and their solidification
TL;DR: The study of metallic melts, their physical properties, and their solidification behavior is of relevance to understanding of fundamental principles and to metallurgical applications as discussed by the authors, and many, if not all, of them have been studied.
References
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Journal ArticleDOI
Formation of Crystal Nuclei in Liquid Metals
TL;DR: In this paper, the authors calculated the interfacial energies between crystal nuclei and the corresponding liquids from nucleation frequencies of small droplets on the basis of homogeneous nucleation.
Journal ArticleDOI
Kinetics of Solidification of Supercooled Liquid Mercury Droplets
TL;DR: In this paper, it was shown that Hg2I2−coated liquid mercury droplets (2-8 microns diameter) solidify at rates that are proportional to droplet volume and satisfactorily described by the theory of homogeneous nucleation of crystals.
Journal ArticleDOI
Microscopic Observation of the Solidification of Small Metal Droplets
D. Turnbull,R. E. Cech +1 more
TL;DR: The solidification behavior of small metal (10 to 100 micron diameter) droplets has been observed on a high temperature microscope stage as discussed by the authors, where the growth rate of metal crystals is very great so that the solidification rate of the droplets is controlled by the nucleation frequency.
Journal ArticleDOI
Variation with temperature of the nucleation rate of supercooled liquid tin and water drops.
TL;DR: Preliminary measurements on supercooled liquid tin andsupercooled water show their rate of nucleation has a very large negative temperature coefficient corresponding to an activation energy of the order of − 2 × 105 calories.
Journal ArticleDOI
Heat Flow during Rapid Solidification of Undercooled Metal Droplets
Carlos G. Levi,R. Mehrabian +1 more
TL;DR: In this paper, a new mathematical formulation and solution methodology is developed for simulating the solidification process in an undercooled spherical droplet from a single nucleation event occurring at its surface.