Lanthanum effects on microstructure and galvanic corrosion of Fe-20Cr-18Ni-6Mo-0.8Cu-0.2N stainless steel welded joints
文献类型：期刊论文
| 作者 | Li, Haojun1,2,4,5; Jiang, Quantong1,2,4,5; Liu, Xingbin1,2,4,5; Lu, Dongzhu1,2,4,5; Zhai, Xiaofan1,2,4,5; Wang, Jin2; Li, Chen3; Duan, Jizhou1,2,4,5; Hou, Baorong1,2,4,5 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE
 |
| 出版日期 | 2025-09-20 |
| 页码 | 24 |
| ISSN号 | 0022-2461 |
| DOI | 10.1007/s10853-025-11514-0 |
| 通讯作者 | Jiang, Quantong(jiangquantong@qdio.ac.cn) |
| 英文摘要 | This study investigates lanthanum (La) effects on microstructure and galvanic corrosion of Fe-20Cr-18Ni-6Mo-0.8Cu-0.2N stainless steel and Q235 carbon steel welds. Tungsten inert gas welding was employed to achieve sound joint formation. Coarse grains are formed in the fusion zone, and sigma-phases consisting of Cr3Ni2 and Fe-Cr-Mo are produced in the heat-affected zone by prolonged heating. In La-contained alloys, between the grain boundary precipitation phase presented and substrate surface existed large potential difference results in galvanic corrosion. However, the alloy contained 0 wt% La had a lower surface potential of 1.927 mu V and 0.5 wt%, 1.5 wt%, 2.0 wt% La alloy more than 2.800 mu V. This result demonstrated La plays a positive role in raising alloy surface potential to reduce the initially corrosion tendency. From electrochemical results, the alloy containing 0.5 wt% La demonstrated a stable open-circuit potential of - 0.518 V and largest passive film breakdown potential (Eb) of 0.45 V after 12 days corrosion, indicating minimization of galvanic corrosion tendency. Moreover, the 0.5 wt% La alloy (2.40 x 106 cells/ml) was found inhibiting about 78.18% of SRB growth by bacteria count for 0 wt% La (1.10 x 107 cells/ml). |
| WOS关键词 | CARBON-STEEL ; BEHAVIOR ; ALLOY ; ZONE |
| 资助项目 | China-Sri Lanka Joint Center for Research and Education[121311KYSB20210005] ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS[2021WHZZB2301] ; Wenhai Program of the S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology ; Qingdao Key Technology Research and Development Project[2021CXLH0005] ; Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001574872900001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203401]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Jiang, Quantong |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, State Key Lab Adv Marine Mat, Qingdao 266071, Peoples R China 2.Qilu Univ Technol, Sch Mat Sci & Engn, 3501 Daxue Rd, Jinan 250353, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Publ Technol Ctr, Qingdao 266071, Peoples R China 4.Laoshan Lab Marine Corros & Protect Open Studio, 1 Wenhai Rd, Qingdao 266237, Peoples R China 5.Sanya Inst Ocean Ecoenvironm Engn, Sanya 572024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Haojun,Jiang, Quantong,Liu, Xingbin,et al. Lanthanum effects on microstructure and galvanic corrosion of Fe-20Cr-18Ni-6Mo-0.8Cu-0.2N stainless steel welded joints[J]. JOURNAL OF MATERIALS SCIENCE,2025:24. |
| APA | Li, Haojun.,Jiang, Quantong.,Liu, Xingbin.,Lu, Dongzhu.,Zhai, Xiaofan.,...&Hou, Baorong.(2025).Lanthanum effects on microstructure and galvanic corrosion of Fe-20Cr-18Ni-6Mo-0.8Cu-0.2N stainless steel welded joints.JOURNAL OF MATERIALS SCIENCE,24. |
| MLA | Li, Haojun,et al."Lanthanum effects on microstructure and galvanic corrosion of Fe-20Cr-18Ni-6Mo-0.8Cu-0.2N stainless steel welded joints".JOURNAL OF MATERIALS SCIENCE (2025):24. |
入库方式： OAI收割
来源：海洋研究所
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