7085-T6 Alloy

Alloy name: 7085-T6
Diagram No.: 1182
Type of diagram: TTP
Chemical composition in weight %: max. 0.04% Cr, 1.30-2.00% Cu, max. 0.08% Fe, 1.20-1.80% Mg, max. 0.04% Mn, max. 0.06% Si, max. 0.06% Ti, 7.00-8.00% Zn, 0.08-0.15% Zr, balance is Al
Alloy group: Aluminium-based alloys
Note: Figure is another example of a TTP diagram for two properties. This time solute loss is measured by yield strength, the effect of grain boundary precipitate is measured by toughness. For quench interrupted 3OU Có35O C, only at short time is needed for precipitates to weaken the grain-boundary enough for toughness to drop nearly in half. At longer hold times, when solute depletion becomes significant, the matrix becomes more ductile, and the toughness actually increases. A survey of all available TTP diagrams for toughness found this pattern to be general.
Reference: Not shown in this demo version.

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