Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1501426 | Scripta Materialia | 2007 | 4 Pages |
Abstract
Spheroidal microstructures suitable for thixoforming, can be formed by a variety of techniques. From optical microscopy and electron backscattered diffraction observations, the mechanism of formation of such microstructure in an Al–Si alloy conditioned by the so-called deformation–recrystallization technique is described as an internal partition of the deformed dendrites. During heating and partial remelting, low angle boundaries turn into high angle boundaries, whose penetration by the liquid is energetically favorable, thus leading to a dispersion of spheroidal Al-α particles.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
E.A. Vieira, A.M. Kliauga, M. Ferrante,