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Which consequence arises when introducing interstitial atoms into steel's lattice?

A)Increased yield strength occurs
B)Enhanced thermal conductivity is found
C)Reduced electrical resistivity shows
D)Higher ductile behaviour is seen

💡 Explanation

Interstitial atoms cause lattice distortions, because they impede dislocation motion through the work hardening mechanism. This increases the force needed for plastic deformation, therefore yield strength increases, rather than changes in conductivity or ductility, which depend more on electron mobility.

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