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solute redistribution

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005215
EISBN: 978-1-62708-187-0
...Abstract Abstract This article discusses the two extremes of solute redistribution, equilibrium solidification and nonequilibrium Gulliver-Scheil solidification, for which solid redistribution of solute within the primary solid phase is the distinguishing parameter. The process and material...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005609
EISBN: 978-1-62708-174-0
...Abstract Abstract This article reviews the fundamental solidification concepts for understanding microstructural evolution in fusion welds. The common concepts, namely, nucleation, competitive grain growth, constitutional supercooling, solute redistribution, and rapid solidification, depend...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005237
EISBN: 978-1-62708-187-0
... in Whitehall, Michigan, for performing the simulations of the VAR ingot. References References 1. Beckermann C. , Macrosegregation , Casting , Vol 15 , ASM Handbook , ASM International , 2008 2. Brody H.D. and Flemings M.C. , Solute Redistribution in Dendritic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005210
EISBN: 978-1-62708-187-0
... patterns in which the branched structure evolves with primary, secondary, tertiary, and eventually higher-order branches. Such a branched structure forms because it can effectively allow rapid dissipation of the latent heat of fusion as well as any solute redistribution required for growth due...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006496
EISBN: 978-1-62708-207-5
... , p 2529 – 2533 10.1007/BF02666687 10. Scheil E. , Z. Metallkd. , Vol 34 , 1942 , p 70 11. Brody H.D. and Flemings M.C. , Solute Redistribution in Dendritic Solidification , Trans. AIME , Vol 236 , 1966 , p 615 – 624 12. Sarreal J.A...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005525
EISBN: 978-1-62708-197-9
... the redistribution of solute by interacting with the flow in the mushy zone and carrying the free-floating solid grains, is only weakly controlled by the ingot size or the superheat ( Ref 54 ): (Eq 45) u b ~ R 2 7 Δ T 3 7 Because u b is such a weak function of R and Δ T...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005216
EISBN: 978-1-62708-187-0
... of macrosegregation. Such macrosegregation can be best understood by considering the local solute redistribution equation (LSRE) derived by Flemings and coworkers ( Ref 1 , 2 , 3 ). This equation is based on a solute balance on a lume element inside the mushy zone, as illustrated in Fig. 2 . As in a standard...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005218
EISBN: 978-1-62708-187-0
... of solute redistribution and boundary layer propagation ( Ref 8 , 9 ). The spatial resolutions available, Δ r ∼100 μm, prevented detailed studies of solid-liquid interface morphologies, but the resolution in x-ray absorption contrast was adequate to verify proximity to Scheil-Gulliver conditions as well...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005228
EISBN: 978-1-62708-187-0
... obtained with MEPHISTO allowed specific evaluation of the effects of convection on solute redistribution during the directional solidification of alloys and the observation of transitions in interface morphology from planar to cellular. By using three identical samples that were alternately melted...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003729
EISBN: 978-1-62708-177-1
... for dendrite growth, these models are not quantitative. A more fundamental approach ( Ref 20 ) includes time-dependent calculations for temperature distribution, solute redistribution in the liquid and solid phases, curvature, and growth anisotropy. Solidification velocity is calculated from the transport...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003735
EISBN: 978-1-62708-177-1
... that require long-range diffusion and solute redistribution. Fig. 1 Growth of massive ferrite in pure iron, illustrating the crossing of prior-γ/γ grain boundaries outlined by surface grooving. Reprinted with permission from Ref 3 Fig. 2 The two-plateau behavior of the transformation...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005501
EISBN: 978-1-62708-197-9
... calculations was started by Van Laar, who computed a large number of prototype binary phase diagrams with different topological features using ideal and regular solution models. Since then, many researchers began to incorporate phase equilibrium data to evaluate the thermodynamic properties of alloys...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005214
EISBN: 978-1-62708-187-0
... Process of Iron Base Alloys,” thesis, Department of Casting of Metals, Royal Institute of Technology , 1978 21. Brody H.D. and Flemings M.C. , Solute Redistribution in Dendritic Solidification , Trans. Met. Soc. AIME , Vol 236 , 1966 , p 615 – 624 22. Fredriksson H...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005236
EISBN: 978-1-62708-187-0
... and the redistribution of solute has to be considered. A rigorous way to treat this problem was developed by Karma and coworkers ( Ref 9 , 10 ) for binary alloys in the dilute solution limit. For the general case of multicomponent multiphase alloys this correction scheme still deserves to be adapted. The general...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005406
EISBN: 978-1-62708-196-2
... to diffusion fields, the effect of nonconstant diffusion fields inside the interface on the kinetics of the transformation and the redistribution of solute has to be considered. A rigorous way to treat this problem was developed by Karma and coworkers ( Ref 9 , 10 ) for binary alloys in the dilute solution...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005208
EISBN: 978-1-62708-187-0
... of Solidification Phenomena in Al-Cu Alloys , Mater. Sci. Forum , Vol 508 , 2006 , p 69 – 75 6. Bower T.F. , Brody H.D. , and Flemings M.C. , Measurements of Solute Redistribution in Dendritic Solidification , Trans. AIME , Vol 236 , 1966 , p 624 7. Kurz W.F. and Fisher...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005437
EISBN: 978-1-62708-196-2
... Phenomena in Al-Cu Alloys , Mater. Sci. Forum , Vol 508 , 2006 , p 69 – 75 6. Bower T.F. , Brody H.D. , and Flemings M.C. , Measurements of Solute Redistribution in Dendritic Solidification , Trans. AIME , Vol 236 , 1966 , p 624 7. Kurz W.F. and Fisher D.J...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006300
EISBN: 978-1-62708-179-5
... the atomic distance. This leads to the conclusion that austenite transformation proceeds without redistribution of substitutional solutes—in other words, that ferrite inherits the solute content of the parent austenite. These so-called para-equilibrium conditions have been well studied in steels ( Ref 12...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005786
EISBN: 978-1-62708-165-8
... carbides, involving redistribution of substitutional solutes, and carbon transport into the large volume previously consisting of carbon-depleted ferrite. On the other hand, martensitic or fully pearlitic starting microstructures contain the same overall solute content as the resulting austenite, so...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005542
EISBN: 978-1-62708-197-9
... ) = ∇ ⋅ ( D ∇ ρ C )   C = overall alloy composition   D = diffusivity Local solute redistribution d f S d C L = ( 1 − f S ) C L ( 1 − β ) ( 1 − k ) ( 1 − u n v T ) Solute balance in the mushy zone...