caa a22 4500 463231279 CHVBK 20180405153242.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0899-5 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0899-5 The development of hardness homogeneity in aluminum and an aluminum alloy processed by ECAP [Elektronische Daten] [Cheng Xu, Terence Langdon] Equal-channel angular pressing (ECAP) is an effective fabrication process for obtaining ultrafine-grained materials. This paper examines the development of homogeneity in materials processed by ECAP with emphasis on samples of pure aluminum and an Al-6061 alloy processed by ECAP for up to 8 passes at room temperature. The Vickers microhardness was recorded on the polished cross-sectional planes of each as-pressed billet and the results are plotted in the form of contour maps to provide a pictorial depiction of the hardness distributions throughout the cross-sections. The factors influencing the homogeneity are examined, including the die corner angle within the ECAP die and the number of imposed passes. It is shown that good homogeneity may be achieved through ECAP processing when the number of passes in ECAP is reasonably high. Springer Science+Business Media, LLC, 2006 Xu Cheng Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut Langdon Terence Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1542-1550 0022-2461 42:5<1542 2007 42 10853 https://doi.org/10.1007/s10853-006-0899-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0899-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xu Cheng Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut NATIONALLICENCE 700 1- Langdon Terence Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1542-1550 0022-2461 42:5<1542 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer