Monodisperse Al3(LiScZr) core/shell precipitates in Al alloys

V. RADMILOVIC; A. TOLLEY; E. MARQUIS; Z. LEE; U. DAHMEN

SCRIPTA MATERIALIA

ELSEVIER

Año: 2008 vol. 58 p. 529 - 532

1359-6462

We demonstrate a way of producing monodisperse Al3(LiScZr) core/shell inclusions using solid-state reactions. A uniform distribution of particles with a Li- and Sc-rich core surrounded by Li-rich shell a few nanometers thick with Zr segregating at the core/shell interface can be made reproducibly by exploiting kinetic and thermodynamic parameters. This approach to generating precipitate distributions can be applied to a range of alloys and could lead to new types of dispersion-strengthened materials.