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diffusion coefficient

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Published: 01 June 2008
Fig. 5.11 Variation of diffusion coefficient with carbon concentration. Source: Ref 6 More
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Published: 01 November 2007
Fig. 7.4 Temperature dependence of the diffusion coefficient of carbon in austenite More
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Published: 01 November 2007
Fig. 5.23 Effect of nickel content on the diffusion coefficient of carbon in Fe-15Cr-Ni alloys. Source: Ref 38 More
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Published: 31 December 2020
Fig. 10 Variation of diffusion coefficient with carbon concentration. Source: Ref 8 More
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Published: 01 December 2008
Fig. 6.15 Relation between the grain size and the apparent diffusion coefficient More
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Published: 01 December 2008
Fig. 9.15 (a) The diffusion coefficient of Fe-C system. (b) The mechanism of pearlite transformation of Fe-C system and the breakdown of energy consumption More
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Published: 01 July 1997
Fig. 11 Diffusion coefficient of hydrogen in iron alloys. Source: Ref 18 More
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Published: 01 December 2015
Fig. 10 Published values of hydrogen diffusion coefficients in duplex stainless steels. Data sources are identified in Ref 22 . Curves 4 and 5 are from the same source. Curves 8 and 9 are from the same source: Ref 22 More
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Published: 31 December 2020
Fig. 8 Diffusion coefficients ( D ) of interstitial elements (hydrogen, carbon, nitrogen) compared with substitutional elements in alpha iron. Adapted from: Ref 5 More
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Published: 01 December 2008
Fig. 6.12 The self-diffusion coefficients of various kinds of metals. (a) Arrhenius plot. (b) Normalized diagram according to the melting points. The hatching means the decrease of diffusion coefficient according to the magnetic transformation of αFe( T c = 1043 K) More
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Published: 01 December 2008
Fig. 6.13 The interstitial diffusion coefficients. (a) Arrhenius plots. (b) Normalized diagram according to the melting points of solvent metals More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320167
EISBN: 978-1-62708-357-7
... Abstract This chapter provides a detailed discussion on the Brownian motion, diffusion coefficient , and Fick's diffusion laws. It presents a review of solid phase diffusion and discusses the mechanism of diffusion and diffusion coefficient. Brownian motion diffusion coefficient Fick's...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240063
EISBN: 978-1-62708-251-8
... applications of the latter. The chapter also provides information on the temperature dependence of diffusion, intrinsic diffusion coefficients (Kirkendall effect), and high diffusion paths. diffusion interstitial diffusion substitutional diffusion Fick’s laws of diffusion intrinsic diffusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310029
EISBN: 978-1-62708-326-3
... phase transformation, hysteresis in heating and cooling, ferrite and austenite as two crystal structures of solid iron, and the diffusion coefficient of carbon. austenite bainite carbon cementite diffusion coefficient ferrite heat treatment iron martensite microstructure pearlite phase...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2022
DOI: 10.31399/asm.tb.dsktmse.t56050031
EISBN: 978-1-62708-432-1
... Abstract This chapter familiarizes readers with the use of Fick’s laws of diffusion in heat treating, coating, and other metallurgical processes. It contains worked solutions to nearly 30 problems requiring the calculation of activation energy, diffusion coefficient, concentration level...
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Published: 01 December 2008
Fig. 6.9 The uphill diffusion in the spinodal decomposition. When A-B is strongly repulsive, the diffusion coefficient will take a negative value. (a) The phase diagram. (b) The change in structure and composition. (c) The free energy and the diffusion coefficient More
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Published: 01 December 2008
Fig. 2.24 High-pressure effects on water and carbon (a) and (b). Both H 2 O and carbon are transformed at very high pressure according to the P-T diagrams. However, it is difficult to convert graphite into diamond directly because the diffusion coefficient of C atoms in graphite is not more More
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Published: 01 August 2018
to the carbon flux in austenite: the difference between the carbon content at the austenite-ferrite interface (C γ ) and the average carbon content of austenite (C 0 ), ΔC, and the diffusion coefficient of carbon (D) in austenite. (b) ΔC increases as temperature decreases. Conversely, the diffusion coefficient More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140063
EISBN: 978-1-62708-264-8
... The rate at which diffusion occurs is characterized by a parameter, D , called the diffusion coefficient. To a good approximation, one may calculate how long it will take a carbon atom to diffuse a distance, d , by dividing the distance squared by six times D : (Eq 7.1) Time  ( s ) = d...
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Published: 01 December 2008
Fig. 6.7 Analysis on interdiffusion of A-B system (a) The diffusion flow rates in the external coordinates and the marker coordinates. (b) The relation between the interdiffusion coefficient D ~ N i − C u and the diffusion coefficients of component atoms D Ni More