Steady State Creep during Metastable Phase Transition in Al-16 wt% Ag and Al-16 wt% Ag- 0.1 wt% Zr Alloys
Mahmoud, Moustafa;
Abstract
The early stages of decomposition of Guinier-Preston zones (G.P. zones) in Al±16 wt% Ag and Al±16 wt% Ag±0.1 wt% Zr alloys were investigated through creep measurements and electron microscopy observations. It was found that the strengthening and softening of the alloys has been achieved during the formation of metastable phases (G.P. zones and g0-phase) in the ageing temperature range (428 to 498 K). TEM investigations confirmed that the addition of zirconium to the Al±Ag alloy accelerates the formation and coarsening of the metastable phases. The mean values of activation energy of both alloys were found to be equal to that quoted for precipitate±dislocation interactions.
Other data
| Title | Steady State Creep during Metastable Phase Transition in Al-16 wt% Ag and Al-16 wt% Ag- 0.1 wt% Zr Alloys | Authors | Mahmoud, Moustafa | Keywords | Steady State Creep | Issue Date | 1998 | Journal | phys.stat.sol.(a) | Volume | 168 | Start page | 389 | End page | 396 |
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