Influence of normalizing temperature on pitting corrosion resistance of 2205/DH36 clad plate: a new mechanism for σ phase induced pitting corrosion
Year: 2025
Type: article
Abstract: This work investigated the effect of normalization on σ phase precipitation and pitting corrosion resistance of 2205SS clad layer in 2205/DH36 clad plates. Results indicate normalization within 880 °C–920 °C leads to large amount of precipitation of σ phase, seriously deteriorating its pitting corrosion resistance. The pitting corrosion resistance of 2205SS is closely related to the proportion of σ phase. As the normalizing temperature increases from 880 °C to 940 °C, σ phase content gradually decreases with pitting corrosion resistance largely recovered. The significant deterioration in pitting corrosion resistance is attributed to the micro-galvanic corrosion effect induced by σ phase, but not Cr-depletion.
Authors: Jiaxing Cai, Hongchi Ma, Dan Guo, Min Zhu, Xuequn Cheng, Wenxiu Yang, Yi Fan, Qinqin Dai, Yunfang Cui, Xiaogang Li
Language: English
Subfield: Metals and Alloys
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,640
OpenAlex ID: W4414442428