کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1571426 | 1514419 | 2012 | 7 صفحه PDF | دانلود رایگان |
An Al–Li–Cu (AA2091) alloy was subjected to equal channel angular pressing (ECAP) at 210 °C following route BC to a maximum strain of ε = 8.64. A considerable particle age hardening anticipation with respect to an isochronal aging treatment was documented. At ε = 6.48, the alloy reached a peak hardness level, while at ε = 8.64, the alloy overaged and partial dissolution of the two most abundant hardening particles, T1 plates and S' laths, was induced by ECAP/BC.
► Both ECAP/BC and dwelling at 210 °C determined the aging response of the studied Al–Li–Cu alloy.
► Hardening phase precipitation was quantitative evaluated for different strain levels by TEM inspections.
► Peak hardening anticipation occurring at ε = 8.64 (corresponding to 8 ECAP/BC passes).
► ECAP induced partial T1 and S′ particle dissolution phenomena at the overaged condition (ε = 8.64).
Journal: Materials Characterization - Volume 68, June 2012, Pages 7–13