Question

Q.1. Our aim is to produce a Eutectoid Steel that meets the following requirements: at least 330 BHN and \( 15 \% \) EL. (a) Propose a heat treatment that include all details. Determine the yield strength and tensile strength that are obtained by this heat treatment. Justify the results (b) If we apply the same heat treatment to \( \mathbf{1 0 5 0} \) steel, what will be the yield and tensile strengths? (c) If we apply normalizing, what will be the yield strengths, tensile strengths and \( \% \) elongation in the 1080 steel? Q.2. Cylindrical specimens of \( \mathbf{8 6 4 0} \) steel material with a diameter of \( 75 \mathrm{~mm} \) were quenched in both moderately agitated water and oil media. Construct and plot radial hardness profiles. Compare results in detail. (40P)

          Q.1. Our aim is to produce a Eutectoid Steel that meets the following requirements: at least 330 BHN and \( 15 \% \) EL.
(a) Propose a heat treatment that include all details. Determine the yield strength and tensile strength that are obtained by this heat treatment. Justify the results
(b) If we apply the same heat treatment to \( \mathbf{1 0 5 0} \) steel, what will be the yield and tensile strengths?
(c) If we apply normalizing, what will be the yield strengths, tensile strengths and \( \% \) elongation in the 1080 steel?
Q.2. Cylindrical specimens of \( \mathbf{8 6 4 0} \) steel material with a diameter of \( 75 \mathrm{~mm} \) were quenched in both moderately agitated water and oil media. Construct and plot radial hardness profiles. Compare results in detail. (40P)

Q.1. Our aim is to produce a Eutectoid Steel that meets the following requirements: at least 330 BHN and 15 % EL.
(a) Propose a heat treatment that include all details. Determine the yield strength and tensile strength that are obtained by this heat treatment. Justify the results
(b) If we apply the same heat treatment to 1 0 5 0 steel, what will be the yield and tensile strengths?
(c) If we apply normalizing, what will be the yield strengths, tensile strengths and % elongation in the 1080 steel?
Q.2. Cylindrical specimens of 8 6 4 0 steel material with a diameter of 75 mm were quenched in both moderately agitated water and oil media. Construct and plot radial hardness profiles. Compare results in detail. (40P)

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