Accelerated artificial ageing regimes of commercial aluminum alloys. I. Al–Cu–Mg alloys

The effect of heat treatment on hot deformation behaviour of Al 2024

“…Therefore, it can be neglected ( ss ≈ 0). Likewise, studies show that electrical conductivity remains constant after dynamic and static precipitation (Spigarelli et al, 2000;Ber, 2000). In addition, removal of elements from matrix happens faster at high temperatures and the stability difference of solid solution will be less effective.…”

Effect of copper and silicon content on mechanical properties in Al–Cu–Si–Mg alloys

“…Hardening is provided by these artificial aging regimes. Accelerated artificial regimes at high temperatures for short periods are suggested to be almost equal to long artificial aging regimes at low temperatures and comparable mechanical properties can be obtained [4].…”

The Influence of Different External Fields on Aging Kinetics of 2219 Aluminum Alloy

“…2219 aluminum alloy is a kind of alloy can be strengthened through heat treatment, the strengthening phase in the aging process is θ" and θ' phase and its the aging precipitation sequence is SSS-GP zone -θ"-θ'-θ [14]. Figure 6 shows the transgranular TEM microscopic structure of 2219 aluminum alloy which experienced the aging under the effect of different external fields for 4 h and then aging for additional 4 h at the temperature of 175 °C.…”

“…2219 aluminum alloy is a kind of alloy can be strengthened through heat treatment, the strengthening phase in the aging process is θ" and θ' phase and its the aging precipitation sequence is SSS-GP zone -θ"-θ'-θ [14]. Figure 6 shows the transgranular TEM microscopic structure of 2219 aluminum alloy which experienced the aging under the effect of different external fields for 4 h and then aging for additional 4 h at the temperature of 175 • C. It can be seen from Figure 7 that all transgranular precipitated phases are all mutually perpendicular needle-like phases whether under conventional aging or aging of external fields, indicating that the effects of external fields are incapable of changing the type of alloy precipitated phases.…”