FILL OUT THE TABLE AS SHOWN IN THE IMAGE

Problem $2$: Requirements for Age Hardening

Figure $12-33$ shows a hypothetical phase diagram.

Figure $12-33$: Hypothetical phase diagram

a$)$ Fill in the two$-$phase regions in the hypothetical phase diagram at right.

b$)$ Determine which alloys in the table below might be good candidates for age hardening, and explain your reasoning.

$\backslash$begin$\{$tabular$\}\{|$l$|$l$|\}$

$\backslash$hline $\backslash$multicolumn$\{1\}\{|$c$|\}\{$ Alloy $\}$ & $\backslash \backslash$

$\backslash$hline A $\backslash (-10\backslash \%\backslash$mathrm$\{$~B$\}\backslash )$ & $\backslash \backslash$

$\backslash$hline A $\backslash (-20\backslash \%\backslash$mathrm$\{$~B$\}\backslash )$ & $\backslash \backslash$

$\backslash$hline A $\backslash (-55\backslash \%\backslash$mathrm$\{$~B$\}\backslash )$ & $\backslash \backslash$

$\backslash$hline A $\backslash (-87\backslash \%\backslash$mathrm$\{$~B$\}\backslash )$ & $\backslash \backslash$

$\backslash$hline A $\backslash (-95\backslash \%\backslash$mathrm$\{$~B$\}\backslash )$ & $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

$2$

MEE $312$ Engineering Materials

c$)$ For those that are good candidates, describe the heat treatment required and include recommended temperatures

$\backslash$begin$\{$tabular$\}\{|$l$|$l$|$l$|$l$|\}$

$\backslash$hline Artificial aging treatment & Candidate $1$: & $\backslash$begin$\{$tabular$\}\{$c$\}$

Candidate $2($if $\backslash \backslash$

any$)$

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$c$\}$

Candidate $2($if $\backslash \backslash$

any$)$

$\backslash$end$\{$tabular$\}\backslash \backslash$

$\backslash$hline Solution treatment $($Temperature range$)$ & & & $\backslash \backslash$

$\backslash$hline Quenching & & & $\backslash \backslash$

$\backslash$hline Aging $($temperature limit: Solvus$)$ & & & $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$