Effect of Structure Transformation on Transient Creep Behavior of Al-Ag system
Mahmoud, Moustafa;
Abstract
The transient creep of A1-16 wt% Ag and A1-16 wt% Ag-0.1 wt% Zr solid solution alloys is investi gated in the temperature range 428 to 673 K for various ageing times under constant load. The subsequent decrease and increase in the values of creep parameters n and B with increasing ageing times and ageing temperatures has been explained on the basis of structure transformations occuring in Al-Ag alloys. It was found that the addition of Zr to A1-16 wt% Ag alloy accelerates the precipitation of GP zones, y‘-phase, and y-phase. TEM investigations confirmed the above effects. The mean values of the activation energy of both alloys were found to be equal to that quoted for dislocation intersection
Other data
Title | Effect of Structure Transformation on Transient Creep Behavior of Al-Ag system | Authors | Mahmoud, Moustafa | Keywords | transient creep | Issue Date | 1996 | Publisher | Wiley-VCH GmbH, Weinheim | Journal | phys. stat. sol. (a) | Volume | 158 | Start page | 471 | End page | 480 |
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