Which outcome follows when hydrogen embrittlement weakens a high-strength steel bolt in a pipeline flange under high pressure?

💡 Explanation

When hydrogen embrittlement occurs because atomic hydrogen diffuses into the steel lattice during corrosion or processing, it weakens grain boundaries, leading to brittle fracture under tensile stress and causing sudden joint failure. Therefore brittle fracture happens rather than creep, corrosion, or galling, which rely on different degradation mechanisms.

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