Which risk is most increased as welding near quenched steel beam joints cools?

💡 Explanation

As weld metal cools rapidly near quenched zones, dissolved hydrogen concentration increases which promotes hydrogen embrittlement because the quenching creates a high strength but brittle microstructure with high residual stress, sensitive to hydrogen-induced cracking. Therefore, hydrogen embrittlement cracking becomes most prominent rather than lamellar tearing, arc blow, or porosity requiring different compositional or procedural issues.

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