Effect of Composition on Solidification and Grain Refinement in Stainless Steel Casting PDF Download

Author: A. Pradhan
Publisher:
ISBN:
Category :
Languages : en
Pages : 8

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Author: Brian Cantor
Publisher: CRC Press
ISBN: 1000687651
Category : Science
Languages : en
Pages : 559

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Book Description
Written by leading experts in their respective fields, Solidification and Casting provides a comprehensive review of topics fundamental to metallurgy and materials science as well as indicates recent trends. From an industrial perspective, the book begins with chapters on the casting techniques most commonly used in industry today. It then d

Author: Doru Michael Stefanescu
Publisher: Springer Science & Business Media
ISBN: 1475764723
Category : Technology & Engineering
Languages : en
Pages : 354

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Book Description
We come to know about the world in two distinctive ways: by direct perception and by application of rational reasoning which, in its highest form, is mathematical thinking. The belief that the underlying order of the world can be expressed in mathematical form lies at the very heart of science. In other words, we only know what we can describe through mathematical models. Casting of metals has evolved first as witchcraft, to gradually become an art, then a technology, and only recently a science. Many of the processes used in metal casting are still empirical in nature, but many others are deep-rooted in mathematics. In whatever form, casting of metals is an activity fundamental to the very existence of our world, as we know it today. Foundry reports indicate that solidification modeling is not only a cost-effective investment but also a major technical asset. It helps foundries move into markets with more complcx and technically demanding work. The ability to predict internal soundness allows foundries to improve quality and deliveries, and provides the information required to make key manufacturing decisions based on accurate cost estimates before pattern construction even begins. The acceptance of computational modeling of solidification by the industry is a direct result of the gigantic strides made by solidification science in the last two decades.

Author: Steel Founders' Society of America
Publisher:
ISBN:
Category : Solidification
Languages : en
Pages : 148

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Author: Peter F. Wieser
Publisher:
ISBN:
Category :
Languages : en
Pages : 95

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The relation of dendrite structure, nonmetallics and microporosity to solidification time and refinement by inoculation was investigated and correlated to mechanical properties of AISI 4335 steel castings. The dendrite spacing is determined by solidification time and significantly influenced by solute content. Titanium and boron effectively refine the secondary dendrite spacing; selenium tellurium and sulfur have the opposite effect. Titanium inoculation also nucleates equiaxed dendrites thereby reducing or eliminating the columnar dendritic structure. Increasing solidification time and amount or size of nonmetallics decrease the ductility. Improvements in ductility from grain refinement by either inoculation or shorter solidification time are caused by improved distribution or reduction of the size of nonmetallics. Microprobe analysis indicates no significant differences in the segregation behavior of the elements manganese and chromium from inoculation. A hypothesis concerning the formation of dendrite arms was postulated based upon measurements of solute distribution and existing theories of dendrite arm formation. (Author).

Author: G. J. Davies
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 232

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Author: University of Sheffield
Publisher:
ISBN:
Category : Founding
Languages : en
Pages : 586

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Author: CASE INST OF TECH CLEVELAND OHIO DEPT OF METALLURGY.
Publisher:
ISBN:
Category :
Languages : en
Pages : 81

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Book Description
Inoculation techniques were developed to refine the as cast structure of high strength steel. Titanium was found to be the most effective inoculant. Large titanium additions (0.6%) form sulfides which embrittle the steel. Small titanium additions (0.1%) together with controlled superheat and mold design may produce significant refinement. Under these conditions the structure of unidirectionally solidified castings was changed from columnar to equizxed and the reduction in area increased by approximately 25% for specimens oriented vertically to the direction of heat flow and increased about 75% for horizontally oriented specimens. A small improvement in reduction in area of keel block castings was obtained by lthis method. Some improvement in toughness was also obtained by this grain refinement. The influence of vacuum melting on the cast structure of the same steel was investigated. A hypothesis explaining the mechanism of refinement by vacuum melting was proposed. (Author).

Author: I. Minkoff
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 250

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Book Description
This practical guide presents a comprehensive account of solidification processes in metals and alloys and describes the manner in which cast structure arises. Reviews the principle features of solidification theory in an accessible and easily understood manner. Relates the solidification and cast structure process to different industrial processes such as conventional casting, continuous casting, welding, and rapid solidification. Provides concise descriptions of structure formation in cast steel, cast iron and aluminum. Includes treatment of cast ceramics, glass, metal-nonmetal structures, rapid solidification, welding, and continuous casting processes.

Author: Andrea Di Schino
Publisher: MDPI
ISBN: 3039286501
Category : Technology & Engineering
Languages : en
Pages : 260

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Book Description
Stainless steels represent a quite interesting material family, both from a scientific and commercial point of view, following to their excellent combination in terms of strength and ductility together with corrosion resistance. Thanks to such properties, stainless steels have been indispensable for the technological progress during the last century and their annual consumption increased faster than other materials. They find application in all these fields requiring good corrosion resistance together with ability to be worked into complex geometries. Despite to their diffusion as a consolidated materials, many research fields are active regarding the possibility to increase stainless steels mechanical properties and corrosion resistance by grain refinement or by alloying by interstitial elements. At the same time innovations are coming from the manufacturing process of such a family of materials, also including the possibility to manufacture them starting from metals powder for 3D printing. The Special Issue scope embraces interdisciplinary work covering physical metallurgy and processes, reporting about experimental and theoretical progress concerning microstructural evolution during processing, microstructure-properties relations, applications including automotive, energy and structural.