Which failure mode is caused when hydrogen diffuses within crystalline metal?

💡 Explanation

Hydrogen embrittlement causes metal fatigue because hydrogen atoms diffuse into the metal lattice, weakening grain boundaries and facilitating **stress corrosion cracking**. Therefore, cracks nucleate rather than phase transformations, material dissolution, because surface oxidation occurs independently.

• Which mechanism causes increased chain entanglement in polymerization?
• Which consequence occurs due to Einstein's equivalence principle in accelerating elevators?
• Which consequence results when an electron's wave function overlaps another atom?
• Which risk increases within a PWR containment when control rods fail?
• Which consequence results from insufficient catalytic activity in hydrolysis?
• Which operational risk rises during sustained nuclear reactor fission?