Microstructure and corrosion behaviour of structural steel fabricated by wire arc additive manufacturing (WAAM)

被引：0
|
作者：
Dong, Zheng [1 ,2 ]
Torbati-Sarraf, Hamidreza [3 ]
Huang, Cheng [4 ]
Xu, Ke [1 ]
Gu, Xiang-Lin [5 ]
Fu, Chuanqing [1 ,2 ]
Liu, Xingjian [1 ,5 ]
Meng, Zhou [1 ]
机构：
[1] Zhejiang Univ Technol, Coll Civil Engn, Hangzhou, Peoples R China
[2] Key Lab Civil Engn Struct & Disaster Prevent & Mit, Hangzhou, Peoples R China
[3] Purdue Univ, Sch Mat Engn, W Lafayette, IN USA
[4] Imperial Coll London, Dept Civil & Environm Engn, London, England
[5] Tongji Univ, Minist Educ, Key Lab Performance Evolut & Control Engn Struct, Shanghai, Peoples R China
来源：
MATERIALS & DESIGN | 2024年 / 244卷
基金：
中国国家自然科学基金;
关键词：
Metal 3D printing; Wire arc additive manufacturing; Steel; Corrosion; Electrochemical impedance spectroscopy; MANGANESE SULFIDE INCLUSIONS; PITTING CORROSION; MECHANICAL-PROPERTIES; DISSOLVED-OXYGEN; FILM THICKNESS; IRON; EVOLUTION; CONCRETE; OPPORTUNITIES; CONSTRUCTION;
D O I：
10.1016/j.matdes.2024.113158
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Wire arc additive manufacturing (WAAM) is a metal 3D printing technique that allows large-scale elements to be built in a relatively timely and cost-effective manner, well suited to the cost-sensitive construction sector. Despite the potential of this novel technology, the basic properties of WAAM materials remain elusive. This paper presents a comparative study on the microstructure and corrosion behaviour of WAAM steel plates and the conventionally rolled Q345 steel. The WAAM steel exhibited comparable corrosion performance to the conventionally-produced steel within twelve days exposure in 3.5 wt% NaCl solution, including the corrosion current density, and the characteristics of steel/concrete interface, determined through electrochemical impedance spectroscopy (EIS) analysis. Post-corrosion observations revealed that preferential dissolution occurred at (Si, Mn)-rich oxide inclusions, in addition to the general corrosion of surrounding steel matrix. The much higher content of Si and Mn element in the feedstock material WAAM steel resulted in slightly higher susceptibility to localised corrosion, compared to the Q345 rolled steel.
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页数：19
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