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← ScienceWhich risk increases significantly when a pressure vessel's welds exhibit hydrogen embrittlement?
A)Reduced creep resistance at high temps
B)Increased susceptibility to brittle fracture✓
C)Decreased thermal expansion coefficient
D)Enhanced corrosion resistance formation
💡 Explanation
Hydrogen embrittlement weakens the bonds in the metal lattice; therefore, failure occurs more readily via brittle fracture under stress because the crack propagation energy needed for ductile fracture is higher, rather than other thermal properties changing.
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