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a) Define and calculate the weight percentage of tile pro-eutectoid phase in eachalloy

"frtEstimate the suitable temperature to make hardening process for each alloy)( What will be the suitable temperature to make a softening process for each

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j_ What are' the carbon percentage of iron carbon alloys with total cementite/ fraction of 12% and 8%.

5-The mass fraction of eutectoid ferrite in an iron carbon alloy is 0.71011thebasis of this information, is that possible to determine the composition of thisalloy?If so what is the composltion? If not explain why.

3-A O.35%C hypo-eutectoid and 1.2%C hyper-eutectoid plain carbon steels areslowly cooledfrom 950°C to a temperature just below 72rC:

Assignment 7

lhetermine the amount of pearlite and ferrite ill 800 gm of AISI-sAE 1040 steel/ Just below the eutectoid temperature. _

/;conSider 1.5 kg of 99.7% Fe-0.3%C by weight alloy is cooled to a temperatureust below the eutectoid:a) How many kilograms of pro-eutectoid ferrite form?b) How many kilograms of cementite form? - ,c) Sketch the microstructure of this alloy above and below the eutectoid

Temperaturel( What will be the structure of this alloy if it is rapidly quenched? And what

will be the effect on the mechanical properties?e) Consider another a/loy of 99.2% Fe-0.8%C by weight find all the above

requirements, state whether it is hypo' or hyper eutectoid alloy and mentionthe effect of increase of the carbon content 011microstructure and themechanical properties? ~_.......,./

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