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Microstructural characteristics of an ultrafine grain metal processed with equal-channel angular pressing |
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| Authors: | Minoru Furukawa Zenji Horita Minora Nemoto Ruslan Z. Valiev Terence G. Langdon |
| Affiliation: | a Department of Technology, Fukuoka University of Education, Munakata, Fukuoka 811-41, Japan b Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka 812-81, Japan c Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000, Russia d Departments of Materials Science and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089-1453, USA |
| Abstract: | Equal-channel angular pressing is a procedure for producing a fully dense material with an ultrafine grain size, typically in the submicrometer or nanometer range, by subjecting the material to a very high plastic strain. This paper describes the principle of equal-channel angular pressing and illustrates the capability of the technique by reference to a series of detailed experiments conducted on an Al-3%Mg solid solution alloy in which the grain size was successfully reduced by equal-channel angular pressing from an initial size of ˜500 μm in the hot-rolled condition to a final size of ˜0.2 μm. |
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