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Article Dans Une Revue Materials Characterization Année : 2011

Microtexture tracking of sub-boundary evolution during hot deformation of aluminium

Résumé

The microstructure and microtexture evolution of the same 3 grains around a triple point has been followed during hot plane strain compression by electron backscattered diffraction (EBSD) up to a strain of 1.2. A large grained model alloy of Al-0.1 wt% Mn was deformed in the form of a split sample in channel die compression at 400 degrees C by 3 repeated cycles, each involving EBSD grain orientation mapping, hot deformation and quenching. Detailed substructure maps of 3 grains on an inner surface demonstrates that their dislocation substructure develops up to a strain of about 0.5 then stabilises at approximately constant size, disorientation distribution and boundary alignment. The results are consistent with the repolygonisation model of steady state sub-boundary creation and dissolution during hot deformation.

Domaines

Matériaux

Dates et versions

hal-00856300 , version 1 (30-08-2013)

Identifiants

Citer

Romain Quey, Julian H. Driver. Microtexture tracking of sub-boundary evolution during hot deformation of aluminium. Materials Characterization, 2011, 62 (12), pp.1222-1227. ⟨10.1016/j.matchar.2011.10.005⟩. ⟨hal-00856300⟩

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