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Atom Probe Tomography of Solute Distributions in Mg-Based Alloys

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Abstract

Atom probe tomography (APT) has been carried out on three magnesium-based alloys: M1 (Mg-1 wt pct Mn), AZ31(Mg-3 pct Al-1 pct Zn), and ME10 (Mg-1 pct Mn- 0.4 pct misch metal). The aims of this experiment were to measure the composition of the matrix and to investigate solute clustering in the matrix of the three different alloys. For AZ31, the matrix composition was variable but close to the bulk composition. For ME10 and M1, the matrix was depleted in alloying additions, with the remainder residing in precipitates. Most alloying additions were found to exhibit clustering to some extent, with misch metal having the strongest partitioning behavior to clusters. Solute clusters did not appear to affect mechanical twinning. It has been proposed that the clustering behavior of misch metal contributes to its ability to modify the recrystallization texture.

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  1. LEAP 3000 X is a trademark of Imago Scientific Instruments, Madison, WI.

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Acknowledgments

The work described in this article was funded by the Australian Research Council’s Centre of Excellence for Design in Light Metals. The authors are grateful for scientific and technical input and support from the Australian Microscopy & Microanalysis Research Facility (AMMRF) node at the University of Sydney. The authors also thank Deakin University for the provision of laboratory facilities.

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Authors and Affiliations

  1. Centre of Excellence for Design in Light Metals, Deakin University, Victoria, Australia, 3217

    N. Stanford (Senior Researcher) & M.R. Barnett (Research Leader)

  2. Australian Key Centre for Microscopy & Microanalysis, The University of Sydney, NSW, 2006, Sydney, Australia

    G. Sha (Senior Researcher), A. La Fontaine (Atom Probe Engineer) & S.P. Ringer (Director of Electron Microscopy Unit)

  3. Centre of Excellence for Design in Light Metals, University of Sydney, Sydney, Australia

    G. Sha (Senior Researcher) & S.P. Ringer (Director of Electron Microscopy Unit)

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  1. N. Stanford
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  2. G. Sha
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  3. A. La Fontaine
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  4. M.R. Barnett
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  5. S.P. Ringer
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Corresponding author

Correspondence to N. Stanford.

Additional information

Manuscript submitted January 8, 2009.

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Stanford, N., Sha, G., La Fontaine, A. et al. Atom Probe Tomography of Solute Distributions in Mg-Based Alloys. Metall Mater Trans A 40, 2480–2487 (2009). https://doi.org/10.1007/s11661-009-9937-7

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  • DOI: https://doi.org/10.1007/s11661-009-9937-7

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