Which outcome occurs when hydrogen atoms migrate within the microstructure of high-strength steel bolts under tensile stress?

💡 Explanation

When hydrogen atoms diffuse to regions of high tensile stress aided by defects, hydrogen embrittlement occurs because hydrogen reduces the cohesive strength of the steel lattice, leading to brittle crack initiation and propagation. Therefore, hydrogen embrittlement leads to fracture, rather than strengthening, improving corrosion resistance, or lubrication, as those require different material processes.

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