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← ScienceWhich risk increases when mechanical stress concentrates within a titanium metal's grain boundary gaps?
A)Elevated Hall Effect coefficient appears
B)Intergranular corrosion rate increases✓
C)Dislocation density uniformly decreases
D)Complete material superconductivity onset
💡 Explanation
Intergranular corrosion greatly increases because galvanic corrosion leverages the grain boundary gaps. Electrons move due to chemical potential differences; therefore rapid corrosion accelerates, rather than a uniform dislocation decrease or superconductivity which is a different mechanism entirely.
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