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The document discusses the effect of metallurgical factors on CVN impact toughness in 2,25Cr1Mo weld metal. Four welds were produced using different welding parameters and materials. Microstructural analysis found bainitic structure with low ferrite and fine grain size improved CVN toughness. Lower bainite start temperature and heat input promoted this. Carbide precipitation did not significantly affect properties after post-weld heat treatment. AC welding current improved chemistry and CVN values over DC.

Author

Mubeen

Language

EN