Role of complex nonmetallic inclusions on the localized corrosion resistance of wire arc additively manufactured super duplex stainless steel

被引：9
作者：
Huang, Xianhang [1 ,2 ]
Qiu, Wenfeng [2 ]
Niu, Ben [1 ]
Zou, Xiaodong [1 ]
Pan, Linlin [1 ]
Kwok, Chi Tat [3 ,4 ]
机构：
[1] Guangdong Acad Sci, China Ukraine Inst Welding, Guangdong Prov Key Lab Adv Welding Technol, Guangzhou, Peoples R China
[2] South China Univ Technol, South China Adv Inst Soft Matter Sci & Technol, Sch of Emergent Soft Matter, Guangzhou, Peoples R China
[3] Univ Macau, Dept Electromech Engn, Taipa, Peoples R China
[4] Univ Macau, Inst Appl Phys & Mat Engn, Taipa, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 28卷
关键词：
Super duplex stainless steel; Wire arc additive manufacturing; Inclusions; Localized corrosion; PITTING CORROSION; SULFIDE INCLUSIONS; MARINE CORROSION; BEHAVIOR; MICROSTRUCTURE; SUSCEPTIBILITY; TEMPERATURE; NUCLEATION; INITIATION; MECHANISM;
D O I：
10.1016/j.jmrt.2023.12.072
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study investigated the correlation between the MnS & sdot;xMnO & sdot;yAl2O3 & sdot;zSiO2 & sdot;TiN complex inclusions and localized corrosion initiation of the wire arc additively manufactured (WAAMed) super duplex stainless steel (SDSS) part. The results showed that partial dissolution of crystalline MnS within the complex inclusions generated an acidic aggressive environment to led the dissolution of amorphous oxides part, thereby triggering the process of localized corrosion. Additionally, micro-crevices between the inclusions and metallic matrix exacerbated localized corrosion. Finally, the catalytic-occluded cells accelerated propagation of pits. Hence, formation of high density of inclusions resulted in the poor localized corrosion resistance and repassivation ability of the as-built WAAMed SDSS.
引用
收藏
页码：799 / 813
页数：15
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