a)Using a sketch show stress-strain curves for a low carbon steel in the normalised condition. On the
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a)Using a sketch show stress-strain curves for a low carbon steel in the normalised condition. On the same sketch show a second curve and the same scale the stress-strain curve of the same metal after cold working.
Identify important points on each sketch. On one of the curves indicate how you would calculate the plastic ductility from the stress-strain curve.
b) Explain with the help of sketches how the defects in crystal structure interact with dislocations to improve the strength in metals.
c) Explain the important factors for the alloying in metals by
i. A substitutional solid solution
ii. An interstitial solid solution
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