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Microstructure of off-Eutectic Nanoscale Pb-Cd Inclusions in Al

Published online by Cambridge University Press:  02 July 2020

D.P. Peters ,
E. Johnson ,
V.S. Touboltsev ,
A. Johansen  and
L. Sarholt
D.P. Peters
Affiliation:
Ørsted Laboratory, University of Copenhagen, Denmark
E. Johnson
Affiliation:
Ørsted Laboratory, University of Copenhagen, Denmark
V.S. Touboltsev
Affiliation:
Ørsted Laboratory, University of Copenhagen, Denmark
A. Johansen
Affiliation:
Ørsted Laboratory, University of Copenhagen, Denmark
L. Sarholt
Affiliation:
Ørsted Laboratory, University of Copenhagen, Denmark
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Extract

Much work has been devoted to TEM studies of nanoscale precipitates consisting of non-soluble elements in Al, as the Al matrix acts as a unique crucible enabling the study of melting/ solidification and crystal phase transformations at a nanometer scale. Recently, this work has been extended to include the ternary system of Al-Pb-Cd. This system is of particular interest, as both Pb and Cd display a large liquid miscibility gap with Al, but together they form a eutectic system. Bimetallic inclusions consist of an fcc Pb and an hcp Cd segment, joined along an internal interface parallel to the {111}Al planes. In this work, the microstructure and composition of off-eutectic Pb-Cd inclusions are studied. Polycrystalline Al samples were implanted with 1 x 1020 ions/m2 (∼3 at.%) with a Cd:Pb ratio of either 8:2 or 2:8, at temperatures to form inclusions in the 10 nm size range.

Type
Metals and Alloys
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 860 - 861
Copyright
Copyright © Microscopy Society of America

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References

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5. This work was supported by the Danish Natural Sciences Research Council and the European Union “Socrates” exchange scholarship program.Google Scholar