Trans Tech Publications, Materials Science Forum, (503-504), p. 493-498, 2006
DOI: 10.4028/www.scientific.net/msf.503-504.493
Trans Tech Publications, Materials Science Forum, p. 493-498
DOI: 10.4028/0-87849-985-7.493
Full text: Unavailable
A study was carried out on a ECAP processed Sc-containing Al-Mg-Si alloy and on a reference 6082 alloy to investigated grain structure evolution during severe plastic deformation and post-ECAP aging behaviour. The results showed that the mechanism of ultrafine structure development was substantially unchanged with respect to a reference Sc-free alloy. Also the aging sequence and precipitation kinetics of the two alloys revealed to be comparable. The ECAP processed samples of the 6082 reference alloy showed a clear recrystallization peak at temperatures in the range 315-360°C, depending on the amount of strain experienced, whereas the Sc-containing alloy retained its ultrafine structure up to temperatures well exceeding 450°C, under the conditions reproduced in a DSC temperature scan.