期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.08.137
关键词
SPD; aluminum; 6061; machining; ultra-fine; nanostructure
A study has been made of characteristics of precipitation treatable aluminum alloys (6061-T6) deformed to large plastic strains, by analyzing chips created by plane strain (2-D) machining. By varying the geometry of the tool, different levels of strain were imposed in the chip in a single pass of machining. The microstructure of the chips was found to be composed of relatively equi-axed grains with mean size in the range of 70-100 nm. The evolution of the microstructure across the deformation zone has been tracked. The chip micro-hardness values were found to be somewhat greater than that reported for Al 6061-T6 deformed by equal channel angular pressing (ECAP). (c) 2005 Elsevier B.V. All rights reserved.
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