Author/Authors :
Delmas، نويسنده , , François and Vivas، نويسنده , , Marie and Lours، نويسنده , , Philippe and Casanove، نويسنده , , Marie-José and Couret، نويسنده , , Alain and Coujou، نويسنده , , Armand، نويسنده ,
Abstract :
TEM in-situ straining tests, performed in precipitation hardened aluminium alloy 6056-T6, show that precipitates are sheared or by-passed by dislocations. By-passing, assisted by dislocation cross-slip, results in the formation and stress-induced spreading of non-planar loops. The relationship between those elementary mechanisms and the mechanical properties of the alloy is discussed.
Keywords :
Aluminium alloys , Deformation micro-mechanisms , In-situ straining experiments , precipitation hardening
