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← ScienceWhich 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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