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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The influence of deformation path on strain characteristics of AA1050 aluminium processed by equal-channel angular pressing followed by rolling

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Author(s):
Vega, M. C. V. [1] ; Bolmaro, R. E. [2] ; Ferrante, M. [1] ; Sordi, V. L. [1] ; Kliauga, A. M. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos - Brazil
[2] FCEIA UNR CONICET, Inst Fis Rosario IFIR, Rosario - Argentina
Total Affiliations: 2
Document type: Journal article
Source: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 646, p. 154-162, OCT 14 2015.
Web of Science Citations: 8
Abstract

The present investigation reports on the microstructure evolution, texture development, the nature of the grain boundaries and the tensile and deep drawing behaviour of commercial AA1050 Al processed by Equal Channel Angular Pressing (ECAP) plus rolling. Although in terms of final mechanical strength ECAP and rolling are indistinguishable, the deformation path is substantially different, and this has important consequences on both microstructure and texture. From the spatial distribution of high angle grain boundaries (HAGB) and low angle grain boundaries (LAGB), the fine microstructure and the crystallographic texture, it was concluded that the microstructure is oriented according to the external imposed flow: a spin movement in the ECAP process, which promotes the rotation of the cells inside the original grain, followed by a sliding movement caused by the rolling, leading to grain elongation. The ECAP process is more suitable to promote a higher fraction of HAGBs, and the same time as it reduces the intensity of the bulk crystallographic texture. As a consequence an increase of the penetration depth and deformation strain, as measured by the Erichsen test, was observed in samples processed by 8 ECAP passes, characterized by low texture intensity and a high degree of dynamic recrystallization. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/02009-0 - Study of texture and mechanical properties of metallic alloys deformed by shear: equal chanel angular extrusion and assymetric rolling
Grantee:Andrea Madeira Kliauga
Support Opportunities: Research Grants - Young Investigators Grants