A$.$ Answer following questions as True or False.

$($T$)($F$)$ Martensite has an FCC crystal structure

$($T$)($F$)$ Hume Rothery rules are used to explain the creation phenomena of new dislocations

$($T$)($F$)$ Recrystallization is a strengthening method for a metallic material

$($T$)($F$)$ The valence of an atom is related to the ability of the atom to enter into chemical reaction

$($T$)($F$)$ Gibbs phase rule is $2+C=F+P$ when the conditions are variable

$($T$)($F$)$ Ductile fracture is usually preferred for engineering applications

$($T$)($F$)$ Inoculants are used to reduce grain size of a metallic material

$($T$)($F$)$ FCC metals have a definite ductile to brittle transition temperature $($DBTT$)$

$($T$)($F$)$ Endurance limit is related with the fatigue test

$($T$)($F$)$ The highest mechanical performance can be achieved with eutectic composition

$($T$)($F$)$ Deformation of a metallic material by the movement of dislocations through the crystal called as slip.

$($T$)($F$)$ The strengthening mechanism formed by homogenously distributing a thinner second phase in a material is called phase transformation.

$($T$)($F$)$ Jominy test is applied to determine the hardness of a material.

$($T$)($F$)$ Brass is copper based alloys that contain zinc as the major alloying element.

B$.$ A$$a$$daki sorular cevaplay$$n$$z$.$

a$)$ Sketch within a cubic unit cell the following planes and directions.

i$)\frac{12}{b}ar(2)$

ii$)(0112)$

b$)$ Determine the Miller indices for the A$,$ B and C directions shown in the following HCP and cubic unit cells $($show the steps$)$

c$)$ Determine the Miller indices for the A$,$ B and C planes shown in the following cubic unit cells $($show the steps$)$ A

R