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Unveiling hydrogen-induced pitting in welded lean duplex stainless steel: Synergistic effects of stress and hydrogen
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DOI:10.1016/j.electacta.2026.148723.png)
Abstract
En 中文
This study investigates the mechanism of hydrogen-induced pitting in welded lean duplex stainless steel (LDSS). Welding-induced stress and microstructural heterogeneity, especially in the weld root, significantly enhance hydrogen absorption in austenite. This leads to passive film degradation and a shift of pitting initiation from ferrite to austenite. These findings reveal the unique pitting susceptibility of the weld root in hydrogen-containing environments, highlighting the critical role of stress-assisted hydrogen absorption in hydrogen-containing environments.
Keywords:
Duplex stainless steel
Weld seam
passive film
Hydrogen trapping
Stress field
Journal
IF:
5.6
Papers:
4.0W
Citations:
12.6W
