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Which consequence results when tin bronze tools experience sustained humid conditions?

A)Accelerated alpha-phase grain boundary corrosion
B)Rapid beta-phase crystallographic transformation
C)Increased ductile fracture toughness limits
D)Elimination of dezincification failure modes

💡 Explanation

Galvanic corrosion accelerates because of differential aeration; the tin-rich alpha phase becomes cathodic to the bronze grains and undergoes preferential dissolution. Therefore, alpha phase corrosion is highest, rather than other phase transitions occurring independent of humidity.

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