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← ScienceWhich risk increases when pulsed laser welding reduces power?
A)Insufficient molten pool penetration depth✓
B)Excessive heat-affected zone expansion
C)Increased risk of carbide precipitation
D)Greater hydrogen embrittlement susceptibility
💡 Explanation
Reduced laser power during welding decreases energy input; therefore, fusion welding relies on metallic bonding. Interdiffusion might become insufficient due to reduced mass transport, rather than heat issues; the material freezes before adequate metallic bond formation.
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