Controlling the Mechanical Properties of the Metallic Sheet via the Continuous Confined Strip Shearing Process

摘要

A new concept metal forming process termed as the continuous confined strip shearing based on equal channel angular pressing (ECAP), which enables sheet forming in a continuous mode and repeatable manner, is introduced. Both the numerical and experimental studies were carried out to observe the shear deformation patterns during continuous confined strip shearing. An experimental methodology to observe the shear flow patterns formed as a result of the continuous confined strip shearing is demonstrated. Finite element method was used to predict the shear deformation as well as the effective strain induced during the strip shearing process. The effect of the oblique angle, i.e. the shear strain, on the variations in the hardness was studied based on the microstructural changes observed using TEM.