$10$B$.1(16$ points$)$

a$)$ What is the distinction between hypoeutectoid and hypereutectoid steels? $(2$ pts$)$

b$)$ In a hypereutectoid steel, both eutectoid and proeutectoid cementite exist. Explain the difference between them. What will be the carbon concentration in each? $(6$ pts $)$

c$)$ In bullet format compare and contrast the expected mechanical behavior of hypoeutectoid and hypereutectoid steels in terms of: $(8$ pts $)$

i$.$ Yield strength

ii$.$ Ductility

iii. Hardness

iv$.$ Tensile strength