ADVANCED ECAP TECHNIQUES WITH INCREASED STRAIN PER PASS

摘要

Three-dimensional finite-element method (FEM) simulations were used to develop an improved equal channel angular pressing (ECAP) approach that leads to a significantly higher strain per pass (by a factor of 1.5 to 2) than conventional designs with channels intersecting at an angle of 90°. The FEM results also showed that tooling design has a significant effect on strain uniformity and punch load.