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Which risk increases when a steel structure experiences hydrogen blistering?

A)Reduced tensile yield strength
B)Increased electrical conductivity
C)Enhanced thermal diffusivity
D)Improved corrosion resistance

💡 Explanation

Hydrogen blistering weakens steel because hydrogen atoms diffuse into the steel and recombine to form hydrogen gas bubbles within the metal via hydrogen embrittlement; therefore, reduced tensile yield strength results, rather than increased conductivity, as grain boundaries weaken under load.

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