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Which outcome results when interstitial carbon distorts iron crystal grains?

A)Increased tensile strength results
B)Intergranular corrosion accelerates
C)Ductility proportionally increases
D)Melting temperature declines sharply

💡 Explanation

Increased tensile strength results because interstitial atoms cause solid solution strengthening; the mechanism restricts dislocation movement therefore the material resists deformation, rather than becoming more ductile. Corrosion risk depends on the specific materials rather than crystal defects.

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