Which risk increases when welding directly to reinforcing bars?

💡 Explanation

Welding rebar can cause hydrogen to diffuse into the steel, therefore the **hydrogen embrittlement** leads to reduced ductility and cracking under stress, because hydrogen atoms disrupt the steel's microstructure, rather than other options which would improve performance under other conditions.

• Which consequence results when aircraft landing gear oleo strut fails?
• Which outcome occurs when a refrigeration system mixes R-410A with legacy mineral oil?
• Which risk increases when reinforced concrete column experiences sustained compressive load exceeding critical buckling load?
• Which undesirable consequence occurs when excessive ambient vibration overwhelms a MEMS gyroscope within an inertial navigation system?
• Which failure risk substantially increases when welding transverse stiffeners incorrectly onto a steel beam's tension flange?
• Which cracking risk increases when welding high-carbon steel beams?