Which outcome accelerates if polycrystalline metal cools imperfectly?

💡 Explanation

Grain boundary corrosion rate increases because galvanic coupling amplifies near crystal defects via microelectrochemical activity; therefore corrosion risk rises, rather than uniform nucleation, since it's localized not distributed.

• Which outcome occurs when excessive vibrational energy is transferred to a diatomic molecule?
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• Which consequence results when a ferromagnetic core saturates within pulsed-power transformer?
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