|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Ultrafine Grained Materials IX
||Effect of Cryorolling on the Precipitation Evolution and Properties of Al Alloys
||Nageswararao Palukuri, Jayaganthan R
|On-Site Speaker (Planned)
The precipitation behaviour and mechanical properties of ultrafine grained (UFG) Al (7XXX, 6XXX, 2XXX) alloys, developed through cryorolling (CR) is reported. Low temperature differential scanning calorimetry (DSC) and Vickers hardness tests were used as complementary techniques, to study the effect of strain over the precipitation sequence and their transformation kinetics. By using DSC results, various peaks were identified and they have been compared with undeformed alloy. CR has led to the suppression/ simultaneous formation of subsequent phases in UFG materials. Kissinger’s method was used to estimate the activation energies for various phase formations in UFG materials and the values have been compared with their coarse grained (CG) counterparts. The results showed that, in the UFG materials the amount of energy required for precipitation/transformation to primary strengthening phase is more than that in undeformed CG materials.