Question

Quiz 22 I. For a 95% Al-5% Cu alloy (vertical line): a. (4 pts) Sketch and label what you expect the microstructure to look like if the alloy is slow (equilibrium) cooled from 550°C to room temperature 800 700 660. 52 600 T (°C) 548 2 b. (4 pts) Sketch and label what you expect the microstructure of an overaged precipitation hardened alloy to look like. 5.65 500 - 400 c. (2 points) Why aren't Aluminum-Copper alloys containing 10 wt% copper precipitation hardened? 300 Answer: A1020 wt % Cu 590 Cu

Answer 1

Anowev: The omph Show mievo segyegation annol- be resoled The Solid ra Aou Solute vesuiting in lawse ctone de ndtwath Segve etvean (b丿 overages pat havlan es abhoy The C4-A、Sample has been aged a ten to enable the gouth preptoes fwm a Suurersaturd Setid Soluion The strensth d- alloy has been qvdoor meoved by, preaupi todton hardtenus. The iater metauuc Compaved ith a lmposi on impvoved lo ur ndnear the