Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing
Gao, Nong, Starink, Marco J., Furukawa, Minoru, Horita, Zenji, Xu, Cheng and Langdon, Terence G. (2005) Microstructural evolution in a spray-cast aluminum alloy during equal-channel angular pressing. Materials Science and Engineering: A, 410-411, (11), 303-307. (doi:10.1016/j.msea.2005.08.075)
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Official URL: http://dx.doi.org/10.1016/j.msea.2005.08.075
Description/Abstract
A spray-cast Al-7034 alloy was processed by equal-channel angular pressing (ECAP) to a total of 8 passes at 473 K and the pressed samples were examined using transmission electron microscopy, differential scanning calorimetry and electron back-scatter diffraction. It is shown that the grain size of the alloy is reduced to ~0.3 um by ECAP and the high pressures associated with ECAP lead to a fragmentation of the rod-like eta-phase. The high temperature of ECAP also produces a precipitation of eta-phase. There is an increase in the fraction of high-angle boundaries during the initial passes of ECAP but the fraction of low-angle boundaries remains high even after 8 passes.
| Item Type: | Article |
|---|---|
| ISSN: | 0921-5093 (print) |
| Uncontrolled Keywords: | equal-channel angular pressing, grain boundary misorientation, precipitation, thermal processes, ultrafine grains |
| Related URLs: | http://dx.doi.org/10.1016/j.ms...005.08.075 |
| Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| ePrint ID: | 19165 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19165 |
| Deposited On: | 16 Jan 2006 |
| Last Modified: | 01 Jun 2011 00:27 |
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