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← ScienceWhich limit arises when hydrogen embrittlement occurs in pipelines?
A)Reduced yield tensile strength.✓
B)Increased plastic deformation ability.
C)Enhanced weld fracture resistance.
D)Improved corrosion resistance.
💡 Explanation
Hydrogen embrittlement introduces hydrogen atoms into the metal lattice, causing **decohesion** which inhibits dislocation movement, degrading the material. Therefore, tensile strength decreases drastically, rather than plastic deformation increases, because it allows for crack initiation at lower stress.
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