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1. A cylindrical specimen of cold-worked copper (see Fig. below) has experienced a ductility of 25%EL.
If its cold worked radius is 10 mm, what was its radius before deformation? Ductility (1%EL] Brass 30 20
10 1040 Steel Copper 40 GO Percent cold work 2. The microstructure of an iron-carbon al... 

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3. Explain the effect of chromium on the hardenability of alloy steels. 4. Briefly describe quenching and
tempering? 5. A 50mm diameter gear 200mm long is specified to be made such that the core hardness
as quenched should be at least 45 Rockwell C. Using the data in Figures below, choose th... 

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Relation between centre of a bar and the position along the Jominy bus H = value +0.7 0.5. #035
H-value Quenching condition Bar diameter (mmmy 0.20 0.20 Poor oil quench - no agitation 0.35 Good
oil quench - moderate agitation 0.50 Very good oil quench - good agitation 0.70 Strong oil ... 

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9. What are the important parameters that need to be considered for the sheet metal deformation
process? 10. Determine the extrusion ratio if the initial diameter is 100mm and the final diameter is
45mm?