Development of Nano-Structured AA1050 by ECAE and Thermal Treatments

Abstract

In this present work, a study regarding the change in the mechanical properties and in the microstructure of the aluminium alloy AA1050 is made after being processed by severe plastic deformation (SPD) with Equal Channel Angular Extrusion (ECAE). Optical and scanning electron microscopy techniques will be employed in order to determine the evolution of the microstructure after different thermal treatments, subsequent to the severe plastic deformation process. This present work involves a profound study on the change in the mechanical properties for an alloy which has a very low value of strain hardening at room temperature. With this, it is demonstrated that it is possible to improve its mechanical properties significantly with an adequate combination of ECAE processing and thermal treatments

Design, simulation and manufacturing of a connecting rod from ultra-fine grained material and isothermal forging

“…One of the most important aspects to be taken into consideration in relation to the microstructure of ECAP-processed materials is the heat treatment that these materials are subjected to. In the research work by Luis et al [20], an improvement both in the mechanical properties and in the grain size is observed in the case of a previously ECAP-processed AA1050 which is subjected to a subsequent heat treatment. These authors applied a heat treatment at 300 ºC during 5 h which produces recrystallization and thus leads to a significant improvement in the ductility of the material processed in relation to the starting material.…”

Buckling Analysis of Connecting Rod with Ultra Fine Grained Material AA2618

“…[8] One of the most interesting techniques for the production of the UFG material is severe plastic deformation (SPD).Various other techniques are available to produce high values of plastic deformation, such as Equal Channel Angular Extrusion (ECAE), High pressure torsion (HPT), Accumulative Roll Bonding (ARB), among others, severe plastic deformation (SPD) being a favorable method to conform and to control the mechanical behavior of the materials. [9] In the present work buckling analysis is performed for existing materail C70S6 and new material ultrafine grained material AA2618 analytically (Using Rankine's formula) as well as using ANSYS software.…”