$T_{Onset}^1$, $T_{Peak}^1$, $T_{End}^1$ of γ″-phase decrease with cold rolling increasing.

$T_{Onset}^2$, $T_{Peak}^2$, $T_{End}^2$of δ-phase increase, then decrease as cold rolling increases.

Cold rolling promotes γ″→δ transformation and δ-phase precipitation.

Morphology of γ″ and δ phases turns more global with cold rolling increasing.