Different materials processed by Equal Channel Angular Sheet Extrusion (ECASE): Microstructure and Texture Evolution

MUÑOZ, JAIRO; TARTALINI, VANINA; RISSO, PABLO; ÁVALOS, MARTINA; BOLMARO, RAÚL

La Falda

Congreso; 5º Congreso Argentino de Microscopía - SAMIC 2018; 2018

Sociedad Argentina de Microscopía

Severe plastic deformation leads to an increase in the strength of the metallic materials but at the same time also reduces the homogeneous deformation zone leading to lower ductility. Because of the reduction in the strain hardening capacity of the material as a consequence of depletion in dislocations accumulation. Another issue related with the production of UFG materials is the productivity of SPD techniques, since the processing requirements (pressure, friction, and tools processing strength) are highly demanding, particularly when increasing the dimensions of the processed material. To solve this problem some new SPD techniques, based on the original principles of shear strain, have been proposed. Equal Channel Angular Rolling (ECAR) [1] and Equal Channel Angular Sheet Extrusion (ECASE) [2] are some of these Equal Channel Angular Pressing (ECAP) modified techniques. They have been both proposed with the main purpose of using already accepted production techniques, like rolling, with minimum modifications on the technical characteristics to minimize industrial adoption resistance.