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Article Dans Une Revue Microscopy Research and Technique Année : 2011

Determination of Matrix Composition Based on Solute-Solute Nearest-Neighbor Distances in Atom Probe Tomography

Résumé

In this study, we propose a fast automatic method providing the matrix concentration in an atom probe tomography (APT) data set containing two phases or more. The principle of this method relies on the calculation of the relative amount of isolated solute atoms (i.e., not surrounded by a similar solute atom) as a function of a distance d in the APT reconstruction. Simulated data sets have been generated to test the robustness of this new tool and demonstrate that rapid and reproducible results can be obtained without the need of any user input parameter. The method has then been successfully applied to a ternary Al-Zn-Mg alloy containing a fine dispersion of hardening precipitates. The relevance of this method for direct estimation of matrix concentration is discussed and compared with the existing methodologies. Microsc. Res. Tech. 74:257-263, 2011. (C) 2010 Wiley-Liss, Inc.

Domaines

Matériaux

Dates et versions

hal-00633947 , version 1 (19-10-2011)

Identifiants

Citer

F. de Geuser, Williams Lefebvre. Determination of Matrix Composition Based on Solute-Solute Nearest-Neighbor Distances in Atom Probe Tomography. Microscopy Research and Technique, 2011, 74 (3), pp.257-263. ⟨10.1002/jemt.20899⟩. ⟨hal-00633947⟩
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