CELLULAR PRECIPITATION IN THE Mg- 8 wt.%Al ALLOY

Résumé

The reaction of precipitation in alloys of system Mg-Al was the theoretical and
experimental investigation object many having contributed to the comprehension of the
various mechanisms controlling. The goal of this work is the description, on the one hand
mechanisms controlling this reaction and the modifications of the mechanical properties
which accompany them at the time of ageing of the alloy Mg-8 mass.% Al with 200°C and on
the other hand the effect of the plastic deformation on the kinetics of precipitation. The
techniques of analysis used in this respect are: optical microscopy, the diffraction of x-rays
and it micro Vickers pyramid hardness.

Key words: alloy Mg-Al; precipitation; mechanism; deformation.