Journal ArticleDOI
Incremental solidification and forming
A. R. E. Singer,R. W. Evans +1 more
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In this paper, a new concept in solidification and casting technology is outlined which relates powder metallurgy, spray forming, and conventional casting, and it is shown that incremental solidification can he used to make products having enhanced properties.Abstract:
A new concept in solidification and casting technology is outlined which relates powder metallurgy, spray forming, and conventional casting. It is shown that incremental solidification can he used to make products having enhanced properties. Rapid solidification, very low porosity, zero segregation, fine grain size, and uniform distribution of a second phase can be accomplished in various combinations though, regrettably, not all together. A terminology appropriate to the new concept has been developed together with certain definitions. Basic equations are proposed to describe a general model spray forming, from which solutions can be derived in particular practical cases.read more
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Mathematical modeling of the isothermal impingement of liquid droplets in spraying processes
Gerardo Trapaga,Julian Szekely +1 more
TL;DR: In this article, a mathematical representation has been developed and computed results are presented describing the spreading of droplets impacting onto a solid substrate, which is of major practical interest in plasma spraying (PS) and in spray forming (SF) operations.
Journal ArticleDOI
The rapid solidification processing of materials: science, principles, technology, advances, and applications
TL;DR: A comprehensive review of the widely accepted and used rapid solidification processes is presented in this article, where the intrinsic aspects and types of nucleation and the kinetics governing nucleations and subsequent growth of the crystal during rapid solidization are discussed.
Journal ArticleDOI
Processing of Discontinuously-Reinforced Metal Matrix Composites by Rapid Solidification
TL;DR: A review of the literature on rapid solidification processing techniques for discontinuously-reinforced metal matrix composites is presented in this article, where the authors present a cross-section of techniques and experimental results obtained, in recent years, by numerous investigators.
Journal ArticleDOI
A mathematical model of the spray deposition process
E. Gutierrez-Miravete,E. Gutierrez-Miravete,Enrique J. Lavernia,Gerardo Trapaga,Julian Szekely,Nicholas J. Grant +5 more
TL;DR: In this article, a mathematical model for the analysis of heat transfer during spray deposition is described, which is in two parts: the first part calculates the thermal histories of atomized droplets in flight, whereas the second part computes the transient temperature profiles inside the growing preform.
Journal ArticleDOI
Processing Effects in Spray Casting of Steel Strip
TL;DR: In this article, a spray cast strip of AISI 1026 and M2 has been produced by the Osprey™ process under controlled conditions of deposition, and surface condition, microstructure, and extent of porosity in the strip were characterized as a function of distance from top and bottom surfaces.
References
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Journal ArticleDOI
CSD: A Novel Process for Particle Metallurgy Products
TL;DR: The results of development work on a novel particle metallurgy processing technique for highly alloyed tool and high-speed steel manufacture carried out at Aurora Steels Ltd are described in this article.