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This is a Experimental Study study.

October 10, 2025

Study of Thermal Aging Embrittlement in Low Alloy Steel Welds Containing Various Amounts of Ni and Cu

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The weld metal with the highest nickel and copper content showed the largest transition temperature shift.
Fractographic observations confirmed intergranular fracture in the most severely aged welds after thermal aging treatments.
No significant hardening mechanisms were detected in the welds, with embrittlement behavior predominantly influenced by thermal aging.
P segregation at grain boundaries was found to be higher in weld metals enriched with nickel, while copper's impact was secondary.

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This analysis demonstrates the embrittlement behavior of low alloy steel welds with nickel and copper, indicating mechanical property impacts.

Sun et al. (2025) studied this question.

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This analysis demonstrates the embrittlement behavior of low alloy steel welds with nickel and copper, indicating mechanical property impacts.