The potential for scaling ECAP: effect of sample size on grain refinement and mechanical properties

Horita, Z., Fujinami, T. and Langdon, T.G. (2001) The potential for scaling ECAP: effect of sample size on grain refinement and mechanical properties. Materials Science and Engineering A, 318, (1-2), 34-41. (doi:10.1016/S0921-5093(01)01339-9).


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The potential for scaling equal-channel angular pressing (ECAP) for use with large samples was investigated by conducting tests on an aluminum alloy using cylinders having diameters from 6–40 mm. The results show the refinement of the microstructure and the subsequent mechanical properties after pressing are independent of the initial size of the sample and, for the largest sample with a diameter of 40 mm, independent of the location within the sample at least to a distance of 5 mm from the sample edge. By making direct measurements of the imposed load during ECAP, it is shown that the applied load is determined by the sample strength rather than frictional effects between the sample and the die walls. The results demonstrate the feasibility of scaling ECAP to large sizes for use in industrial applications.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/S0921-5093(01)01339-9
ISSNs: 0921-5093 (print)
Related URLs:
Keywords: aluminum alloys, equal-channel angular pressing, mechanical properties, severe plastic deformation, ultrafine grains sizes
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
ePrint ID: 23402
Accepted Date and Publication Date:
Date Deposited: 23 Mar 2006
Last Modified: 31 Mar 2016 11:43

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