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← ScienceHydrogen embrittlement induces which outcome in Zircaloy cladding?
A)Increased neutron absorption cross-section
B)Decreased ductile fracture toughness✓
C)Elevated thermal conductivity threshold
D)Mitigated fretting corrosion susceptibility
💡 Explanation
Hydrogen atoms cause decreased toughness because hydride precipitates induce **stress-induced ordered phase transformation** at grain boundaries, therefore reducing ductility, rather than neutron absorption since that requires transmutation.
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