Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
A study on the influence of ECAP die design and backpressure on the deformation and mechanical properties of a SAE 1045 steel
Submission Author:
Ricardo Sanson Namur , PR
Co-Authors:
Marcel Tadashi Izumi, Maxwell Azevedo, Marcio Ferreira Hupalo, Osvaldo Cintho, Kahl Zilnyk, Ricardo Sanson Namur
Presenter: Ricardo Sanson Namur
doi://10.26678/ABCM.COBEM2017.COB17-2364
Abstract
Equal channel angular pressing of metals have been studied extensively in the last decades for obtaining ultrafine grained metals and optimized properties. Many designs of ECAP dies were developed for processing different materials. This work focused on the investigation of the influence of the die design and backpressure on the deformation and mechanical properties of a SAE 1045 steel. A sliding bottom die and a conventional die were compared. Results indicated that both dies were efficient in producing heavily deformed, thus, hard materials. Conventional optical microscopy and scanning electron microscopy (SEM) revealed an oriented structure of ferritic grains and fractured or bent pearlite colonies. Stress-displacement curves indicated that sliding bottom die processing required a lower punch pressure, however, similar properties may be obtained in both dies. The results denote that sliding bottom dies may ease the processing of this steel.
Keywords
ECAP, severe plastic deformation, equal channel angular pressing
