Laszlo S. Toth

TL;DR: In this article, a new model is presented to describe the hardening behavior of cell-forming crystalline ma- terials at large strains, based on a cellular dislocation structure consisting of two phases: the cell walls and the cell interior.

TL;DR: In this paper, texture development in metals of fcc, bcc, and hcp crystal structure processed by a severe plastic deformation (SPD) technique called equal-channel angular extrusion (ECAE) or equal channel angular pressing (ECAP) is discussed.

TL;DR: In this paper, the yield stress potentials pertaining to the rate sensitive deformation of cubic crystals are described; they are shown to be strictly convex, with shapes that depend on the rate sensitivity exponent, m. A four-variable maximization procedure is presented, which permits the stress state associated with full constraint conditions to be found rapidly.

TL;DR: In this paper, the main features of the obtained microstructures are presented, the most important advantage of ultrafine-grain materials -an enhanced mechanical strength with respect to their coarse grained counterparts - is discussed.

TL;DR: In this paper, a new model is proposed that aims to capture within a single modelling frame all the main microstructural features of a severe plastic deformation process, including the evolution of the grain size distribution, misorientation distribution, crystallographic texture and the strain-hardening of the material.