ON THE DIFFUSION OF **5**9Fe INTO ALUMINIUM AND Al Mn SOLID SOLUTIONS.

D. Beke, I. Godeny, I. Szabó, G. Erdelyi, F. J. Kedves

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The diffusion of **5**9Fe into pure Al and Al Mn solid solutions has been measured by a tracer-sectioning technique. The penetration plots are fitted by a solution of the diffusion equation according to which the surface flux is controlled by a surface barrier (characterizing the dissolution of tracer atoms from the intermetallic phases formed in the near-surface layer) higher than the diffusion activation energy in the bulk. For annealing times t VM GT TH TAU ( TAU is the time required to reach the solubility limit just inside the solvent) the solution reduces to that of constant surface concentration, and at much longer t (when the surface layer is depleted) the thin-film solution can also be valid. Detailed measurements have been carried out to investigate the time dependence of the penetration plots; the diffusion coefficients calculated from the above solution were the same (within experimental error) at fixed temperature. The effect of increased grain-boundary and dislocation density in the near-surface layer was weak; however, several measurements yielded D values higher than those obtained on samples containing large grains and having low dislocation density.

Original languageEnglish
Pages (from-to)425-443
Number of pages19
JournalPhilosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
Volume55
Issue number4
Publication statusPublished - Apr 1987

Fingerprint

surface layers
tracers
penetration
plots
time dependence
intermetallics
dissolving
solid solutions
solubility
diffusion coefficient
grain boundaries
activation energy
Dislocations (crystals)
annealing
Intermetallics
Solid solutions
Dissolution
Grain boundaries
thin films
Solubility

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

ON THE DIFFUSION OF **5**9Fe INTO ALUMINIUM AND Al Mn SOLID SOLUTIONS. / Beke, D.; Godeny, I.; Szabó, I.; Erdelyi, G.; Kedves, F. J.

In: Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties, Vol. 55, No. 4, 04.1987, p. 425-443.

Research output: Contribution to journalArticle

@article{ffc206fc33c34108bc6b4441acf9db52,
title = "ON THE DIFFUSION OF **5**9Fe INTO ALUMINIUM AND Al Mn SOLID SOLUTIONS.",
abstract = "The diffusion of **5**9Fe into pure Al and Al Mn solid solutions has been measured by a tracer-sectioning technique. The penetration plots are fitted by a solution of the diffusion equation according to which the surface flux is controlled by a surface barrier (characterizing the dissolution of tracer atoms from the intermetallic phases formed in the near-surface layer) higher than the diffusion activation energy in the bulk. For annealing times t VM GT TH TAU ( TAU is the time required to reach the solubility limit just inside the solvent) the solution reduces to that of constant surface concentration, and at much longer t (when the surface layer is depleted) the thin-film solution can also be valid. Detailed measurements have been carried out to investigate the time dependence of the penetration plots; the diffusion coefficients calculated from the above solution were the same (within experimental error) at fixed temperature. The effect of increased grain-boundary and dislocation density in the near-surface layer was weak; however, several measurements yielded D values higher than those obtained on samples containing large grains and having low dislocation density.",
author = "D. Beke and I. Godeny and I. Szab{\'o} and G. Erdelyi and Kedves, {F. J.}",
year = "1987",
month = "4",
language = "English",
volume = "55",
pages = "425--443",
journal = "Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties",
issn = "0141-8610",
publisher = "Taylor and Francis Ltd.",
number = "4",

}

TY - JOUR

T1 - ON THE DIFFUSION OF **5**9Fe INTO ALUMINIUM AND Al Mn SOLID SOLUTIONS.

AU - Beke, D.

AU - Godeny, I.

AU - Szabó, I.

AU - Erdelyi, G.

AU - Kedves, F. J.

PY - 1987/4

Y1 - 1987/4

N2 - The diffusion of **5**9Fe into pure Al and Al Mn solid solutions has been measured by a tracer-sectioning technique. The penetration plots are fitted by a solution of the diffusion equation according to which the surface flux is controlled by a surface barrier (characterizing the dissolution of tracer atoms from the intermetallic phases formed in the near-surface layer) higher than the diffusion activation energy in the bulk. For annealing times t VM GT TH TAU ( TAU is the time required to reach the solubility limit just inside the solvent) the solution reduces to that of constant surface concentration, and at much longer t (when the surface layer is depleted) the thin-film solution can also be valid. Detailed measurements have been carried out to investigate the time dependence of the penetration plots; the diffusion coefficients calculated from the above solution were the same (within experimental error) at fixed temperature. The effect of increased grain-boundary and dislocation density in the near-surface layer was weak; however, several measurements yielded D values higher than those obtained on samples containing large grains and having low dislocation density.

AB - The diffusion of **5**9Fe into pure Al and Al Mn solid solutions has been measured by a tracer-sectioning technique. The penetration plots are fitted by a solution of the diffusion equation according to which the surface flux is controlled by a surface barrier (characterizing the dissolution of tracer atoms from the intermetallic phases formed in the near-surface layer) higher than the diffusion activation energy in the bulk. For annealing times t VM GT TH TAU ( TAU is the time required to reach the solubility limit just inside the solvent) the solution reduces to that of constant surface concentration, and at much longer t (when the surface layer is depleted) the thin-film solution can also be valid. Detailed measurements have been carried out to investigate the time dependence of the penetration plots; the diffusion coefficients calculated from the above solution were the same (within experimental error) at fixed temperature. The effect of increased grain-boundary and dislocation density in the near-surface layer was weak; however, several measurements yielded D values higher than those obtained on samples containing large grains and having low dislocation density.

UR - http://www.scopus.com/inward/record.url?scp=0023327274&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023327274&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0023327274

VL - 55

SP - 425

EP - 443

JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties

JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties

SN - 0141-8610

IS - 4

ER -