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Which risk increases when a metal's crystal lattice contains interstitial hydrogen?

A)Enhanced electrical conductivity
B)Hydrogen embrittlement cracking
C)Increased thermal expansion
D)Elevated creep resistance

💡 Explanation

Hydrogen embrittlement cracking increases because hydrogen atoms diffuse into the metallic lattice, causing the hydrogen-enhanced decohesion mechanism; therefore fracture occurs at lower stress rather than retaining ductility because the cohesive forces weaken.

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