1.It is possible to produce cast irons that consist of a martensite matrix in which graphite is embedded in either flake, nodule, or rosette form. Briefly describe the treatment necessary to produce each of these three microstructures
2.The basis of melting temperature, oxidation resistance, yield strength, and degree of brittleness, discuss whether it would be advisable to hot work or to cold work
(a) aluminum alloys, and
(b) magnesium alloys
3.When making hardness measurements, what will be the effect of making an indentation very close to a preexisting indentation? Why?