正火温度对2205/DH36复合板抗点蚀性能的影响：σ相点蚀的新机制

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-20 DOI:10.1016/j.jmrt.2025.09.183

Jiaxing Cai , Hongchi Ma , Dan Guo , Min Zhu , Xuequn Cheng , Wenxiu Yang , Yi Fan , Qinqin Dai , Yunfang Cui , Xiaogang Li

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引用次数: 0

摘要

研究了正火处理对2205/DH36包覆板中2205SS包覆层σ相析出及抗点蚀性能的影响。结果表明：在880℃~ 920℃范围内正火会导致σ相的大量析出，严重降低其抗点蚀性；2205SS的抗点蚀性能与σ相的比例密切相关。随着正火温度从880℃升高到940℃，σ相含量逐渐降低，耐点蚀性基本恢复。抗点蚀性能的显著下降主要是由于σ相引起的微电偶腐蚀效应，而非cr损耗。

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Influence of normalizing temperature on pitting corrosion resistance of 2205/DH36 clad plate: a new mechanism for σ phase induced pitting corrosion

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.

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.