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Article Dans Une Revue Advanced Engineering Materials Année : 2006

Atom probe tomography II. The precipitation in Al base alloys

F. de Geuser
Williams Lefebvre
Frédéric Danoix
D. Blavette

Résumé

This paper presents two illustrations of the study of phase separation in Al‐based alloys by means of tomographic atom probe. In an AlMgSi alloy, calculations of pair correlation functions have revealed that the nature of solute short range order differs from a pre‐aged specimen to a non‐pre‐aged specimen. This results in different responses to aged hardening treatments. Concerning Al3(Zr,Sc)‐type dispersoids observed in another Al‐based alloy, they are found to display a core‐shell structure wherein Zr is mainly present in the dispersoids periphery. This duplex structure is likely to explain the relative stability of Al3(Zr,Sc) dispersoids.

Dates et versions

hal-01928900 , version 1 (20-11-2018)

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Citer

F. de Geuser, Williams Lefebvre, P. Auger, Frédéric Danoix, A. Bigot, et al.. Atom probe tomography II. The precipitation in Al base alloys. Advanced Engineering Materials, 2006, 8 (12), pp.1206--1209. ⟨10.1002/adem.200600180⟩. ⟨hal-01928900⟩
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