Dissolution of kinetics of nanoscale liquid Pb/Bi inclusions at a grain boundary in aluminium: 12th International Conference on Intergranular and Interphase Boundaries, JUL 10-13, 2007 Barcelona, SPAIN

Sergei I. Prokofjev; Erik Johnson; Victor M. Zhilin; Ulrich Dahmen

Dissolution of kinetics of nanoscale liquid Pb/Bi inclusions at a grain boundary in aluminium: 12th International Conference on Intergranular and Interphase Boundaries, JUL 10-13, 2007 Barcelona, SPAIN

Sergei I. Prokofjev, Erik Johnson, Victor M. Zhilin, Ulrich Dahmen

Condensed Matter Physics

1 Citation (Scopus)

Abstract

In situ transmission selctron microscopy is used to study dissolution of liquid single-phase Pb/Bi inclusions attached to grain boundary in an alloy of Al_99.29Pb_0.65Bi_0.06 at temperatures of 343, 370, and 389 °C, respectively. The initial size of the inclusions was smaller than 60 nm. Dissolution of the inclusions was observed until their complete disappearance. Digitized video recordings of the process of dissolution were used to obtain the dependence of the inclusion size with time. The kinetics of the dissolution of the grain boundary inclusions can be described with a model where it is assumed that grain-boundary diffusion of Pb and Bi is the controlling mechanism. The high value (2.3 eV) of the apparent activation enthalpy of dissolution indicates that the process is likely governed by the large negative enthalpies of solubility of Pb and Bi in Al.

Original language	English
Journal	Journal of Materials Science
Volume	43
Issue number	11
Pages (from-to)	3894-3899
Number of pages	6
ISSN	0022-2461
Publication status	Published - 8 Jun 2008

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Dissolution of kinetics of nanoscale liquid Pb/Bi inclusions at a grain boundary in aluminium: 12th International Conference on Intergranular and Interphase Boundaries, JUL 10-13, 2007 Barcelona, SPAIN. / Prokofjev, Sergei I.; Johnson, Erik; Zhilin, Victor M. et al.
In: Journal of Materials Science, Vol. 43, No. 11, 08.06.2008, p. 3894-3899.

Research output: Contribution to journal › Conference article › Research › peer-review

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abstract = "In situ transmission selctron microscopy is used to study dissolution of liquid single-phase Pb/Bi inclusions attached to grain boundary in an alloy of Al99.29Pb0.65Bi0.06 at temperatures of 343, 370, and 389 °C, respectively. The initial size of the inclusions was smaller than 60 nm. Dissolution of the inclusions was observed until their complete disappearance. Digitized video recordings of the process of dissolution were used to obtain the dependence of the inclusion size with time. The kinetics of the dissolution of the grain boundary inclusions can be described with a model where it is assumed that grain-boundary diffusion of Pb and Bi is the controlling mechanism. The high value (2.3 eV) of the apparent activation enthalpy of dissolution indicates that the process is likely governed by the large negative enthalpies of solubility of Pb and Bi in Al. ",

author = "Prokofjev, {Sergei I.} and Erik Johnson and Zhilin, {Victor M.} and Ulrich Dahmen",

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AU - Prokofjev, Sergei I.

AU - Johnson, Erik

AU - Zhilin, Victor M.

AU - Dahmen, Ulrich

PY - 2008/6/8

Y1 - 2008/6/8

N2 - In situ transmission selctron microscopy is used to study dissolution of liquid single-phase Pb/Bi inclusions attached to grain boundary in an alloy of Al99.29Pb0.65Bi0.06 at temperatures of 343, 370, and 389 °C, respectively. The initial size of the inclusions was smaller than 60 nm. Dissolution of the inclusions was observed until their complete disappearance. Digitized video recordings of the process of dissolution were used to obtain the dependence of the inclusion size with time. The kinetics of the dissolution of the grain boundary inclusions can be described with a model where it is assumed that grain-boundary diffusion of Pb and Bi is the controlling mechanism. The high value (2.3 eV) of the apparent activation enthalpy of dissolution indicates that the process is likely governed by the large negative enthalpies of solubility of Pb and Bi in Al.

AB - In situ transmission selctron microscopy is used to study dissolution of liquid single-phase Pb/Bi inclusions attached to grain boundary in an alloy of Al99.29Pb0.65Bi0.06 at temperatures of 343, 370, and 389 °C, respectively. The initial size of the inclusions was smaller than 60 nm. Dissolution of the inclusions was observed until their complete disappearance. Digitized video recordings of the process of dissolution were used to obtain the dependence of the inclusion size with time. The kinetics of the dissolution of the grain boundary inclusions can be described with a model where it is assumed that grain-boundary diffusion of Pb and Bi is the controlling mechanism. The high value (2.3 eV) of the apparent activation enthalpy of dissolution indicates that the process is likely governed by the large negative enthalpies of solubility of Pb and Bi in Al.

M3 - Conference article

SN - 0022-2461

VL - 43

SP - 3894

EP - 3899

JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 11

ER -

Dissolution of kinetics of nanoscale liquid Pb/Bi inclusions at a grain boundary in aluminium: 12th International Conference on Intergranular and Interphase Boundaries, JUL 10-13, 2007 Barcelona, SPAIN

Abstract

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