| Autor: |
S. H. Seyyedein, M.T. Salehi, M. R. Abutalebi, M.H. Shaeri, Joong Keun Park |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Journal of Alloys and Compounds. 576:350-357 |
| ISSN: |
0925-8388 |
| DOI: |
10.1016/j.jallcom.2013.05.182 |
| Popis: |
The aim of this paper was to examine the microstructure and texture that develops during equal channel angular pressing (ECAP). Al-7075 alloy was subjected to 4 passes of ECAP deformation at room temperature by using Route B C and A. The texture was investigated by X-ray diffractometer (XRD) in ED-plane (plane perpendicular to extrusion direction) as well as TD-plane (plane parallel to extrusion direction). The texture calculation by Labotex software reveals that in 1 pass ECAPed specimens, C θ is the strongest texture component, while after 4 passes B θ / B θ ′ and A 1 θ ∗ are the strongest components in route A and B C , respectively , and also the results in both TD ( z ) and ED ( x ) planes are in good agreement. Texture strengthening was observed after the initial pass but there was evidence for texture weakening after 4 passes. Microstructure investigation by transmission electron microscopy (TEM) shows that ultrafine-grained materials with grain size less than 500 nm could be obtained after 4 passes of ECAP process. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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