$5.(1$ point$)$ Sketch and label time$-$temperature paths on the isothermal transformation diagram for an

iron$-$carbon alloy of eutectoid composition to produce the following microstructures:

$($a$)100\%$ coarse pearlite

$($b$)50\%$ martensite and $50\%$ austenite

$($c$)50\%$ coarse pearlite, $25\%$ bainite, and $25\%$ martensite

Page $55.(1$ point$)$ Sketch and label time$-$temperature paths on the isothermal transformation diagram for an iron$-$carbon alloy of eutectoid composition to produce the following microstructures:

$($a$)\backslash (100\backslash \%\backslash )$ coarse pearlite

$($b$)\backslash (50\backslash \%\backslash )$ martensite and $\backslash (50\backslash \%\backslash )$ austenite

$($c$)\backslash (50\backslash \%\backslash )$ coarse pearlite, $\backslash (25\backslash \%\backslash )$ bainite, and $\backslash (25\backslash \%\backslash )$ martensite $5.(1$ point$)$ Sketch and label time$-$temperature paths on the isothermal transformation diagram for an iron$-$carbon alloy of eutectoid composition to produce the following microstructures:

$($a$)\backslash (100\backslash \%\backslash )$ coarse pearlite

$($b$)\backslash (50\backslash \%\backslash )$ martensite and $\backslash (50\backslash \%\backslash )$ austenite

$($c$)\backslash (50\backslash \%\backslash )$ coarse pearlite, $\backslash (25\backslash \%\backslash )$ bainite, and $\backslash (25\backslash \%\backslash )$ martensite