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← HistoryWhich risk increases when forging iron suspension bridge eyebars below the critical temperature?
A)Weld decay propagates faster
B)Grain boundary slip worsens
C)Strain hardening accelerates failure✓
D)Tempering embrittlement process intensifies
💡 Explanation
Strain hardening failure risk does increase because, at lower than recommended temperatures, the mechanism of work hardening increases the material's brittleness and yield strength, resulting in material failure; therefore, this is more likely, rather than faster creep due to grain boundary issues that appear at higher temperature conditions.
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