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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420429
EISBN: 978-1-62708-310-2
..., cellular, and dendritic growth, the basic freezing sequence for an alloy casting, and the variations in cooling rate, heat flow, and grain morphology in different areas of the mold. It also describes the types of segregation that occur during freezing, the effect of solidification rate on secondary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190001
EISBN: 978-1-62708-296-9
... parts. It also describes the mechanism behind dendritic grain crystallization and how factors such as surface tension, capillary length, and lattice symmetry affect dendritic arm size and spacing. The section that follows examines the morphology of the silicon crystals that form in aluminum-silicon...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420087
EISBN: 978-1-62708-310-2
... and scale of eutectic structures, and the competitive growth of dendrites and eutectic colonies or cells. It also examines the different types of precipitation structures that form during slow cooling cycles. aluminum-silicon alloys eutectic systems lead-tin-alloys microstructure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
..., gravity, micro, and inverse. The chapter also provides information on grain refinement and secondary dendrite arm spacing and porosity and shrinkage in castings. It concludes with a brief overview of six of the most important casting processes in industries: sand casting, plaster mold casting, evaporative...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220129
EISBN: 978-1-62708-259-4
... explains how steel shrinks as it solidifies, causing issues such as pipe and voids, and how differences in the solubility of solid and liquid steel lead to compositional heterogeneities or segregation. It describes the dendritic nature of solidification, peritectic and eutectic reactions, microporosity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140039
EISBN: 978-1-62708-335-5
...; dendrite arm spacing; grain size and shape; and eutectic modification and primary phase refinement. This chapter discusses the effects of these microstructural features on properties and methods for controlling them. The chapter concludes with a detailed examination of the refinement of hypereutectic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140165
EISBN: 978-1-62708-264-8
.... The interface actually consists of arrays of small branched structures that look like pine trees growing into the liquid, with branches coming off at right angles, as shown in the inset labeled “B.” Each little treelike structure is called a dendrite (which is the Greek word for tree). If the liquid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.9781627082969
EISBN: 978-1-62708-296-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
... %C to the eutectic value of 4.3 at the base of the dendrites, where the temperature drops to 1148 °C (2100 °F), and the cementite carbide (Fe 3 C) will form from the liquid as a eutectic mixture of austenite + Fe 3 C. [1] However, on cooling to 1100 °C (2010 °F), this Fe 3 C can dissolve into the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410163
EISBN: 978-1-62708-265-5
... finished steel products by primary processing: inclusions and chemical segregation. Inclusions are nonmetallic compounds introduced during steelmaking and casting, and segregation is a result of chemistry variations produced during dendritic solidification of steels. Such segregation may cause the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190173
EISBN: 978-1-62708-296-9
... component i in phase x d diameter of equiaxed particle, dendrite grain d c range of the constitutional undercooling zone d Γ capillary length DAS, λ 1 dendrite arm size of the first order (equivalent dendrite grain diameter) D L diffusion coefficient in liquid G i...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730011
EISBN: 978-1-62708-283-9
... (constitutional) variations. This situation is not stable. If any area of the liquid interface happens to extend slightly ahead of the other areas, it will freeze faster and grow rapidly into the undercooled liquid, and dendrites will form with arms reaching out into the liquid. Fig. 2.11 Constitutional...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560125
EISBN: 978-1-62708-291-4
... array ( Fig. 6.17 (Part 1) d , which would represent the array of inclusions illustrated in Fig. 6.14 (Part 1) f ). This morphology presumably arises because the sulfides were constrained to grow between two parallel dendrites, which makes their interdendritic distribution more apparent in light...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850001
EISBN: 978-1-62708-260-0
... , 1968 , pp. 295 – 304 . 15. Alexander B. H. , and Rhines F. N. : “ Dendritic Crystallization of Alloys, ” Trans. Am. Inst. Min. Metall. Eng. , vol. 188 , 1950 , pp. 1267 – 1273 . 10.1007/BF03399143 16. Dawson J. V. , and Oldfield W. : “ Euctectic Cell Count - An...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400049
EISBN: 978-1-62708-258-7
... sample is fractured and examined in the scanning electron microscope (SEM), one can see dendrites of manganese sulfides, an example of which is shown in Fig. 3.34 . In this SEM micrograph, there is a primary dendrite arm (the main stem aligned left-to-right in the micrograph), with a number of secondary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190vii
EISBN: 978-1-62708-296-9
... crystallites (grains) of condensed phases—that is, solid solutions, intermetallic phases, and nonmetallic inclusions. This internal construction bears the external loading. The grains (in casting alloys also dendrite grains and eutectic grains) represent a small volume of material and are strictly defined by...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... dendritic growth. As shown in Fig. 5.4 , the type of growth is controlled by the manner in which heat is removed from the system. When the liquid ahead of the solid-liquid interface, x 0 , has a positive temperature gradient, heat is removed from the liquid by conduction through the growing solid. Because...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220583
EISBN: 978-1-62708-259-4
... conditions, austenite will grow in the shape of dendrites (see Chapter 8, “Solidification, Segregation, and Nonmetallic Inclusions” ). As temperature is further reduced, the volume fraction of austenite increases while that of liquid decreases. On a binary phase diagram and in the absence of segregation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110447
EISBN: 978-1-62708-247-1
... - 70 , 1997 . 10.1021/ma961018q [17] Cheung A. Teng , “ Delamination from Process Induced Sources ,” in 49th Electronic Components and Technology ConfefenCe , San Diego , 1999 . [18] Kho W. F. and Chan G. H. , “ Copper dendrite formation on laser fuse structures of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420117
EISBN: 978-1-62708-310-2
... steels for which peritectic formation of γ has been studied in detail. A directionally-solidified high-speed steel with peritectic γ envelopes around the highly branched δ dendrites is shown in Fig. 6.16 . The varying thickness of the layers on the front and the back of the secondary dendrite arms...