The effect of oxide scale on the corrosion resistance of SUS301L stainless steel welding joints

被引：1
|
作者：
Zhao, Xiao-Yan [1 ]
Cheng, Cong-Qian [1 ]
Cao, Tie-Shan [1 ]
Zhao, Jie [1 ]
Sun, Xiao-Guang [2 ]
Zhang, Dong-Jiu [3 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
[2] CRRC Qingdao Sifang Co Ltd, Qingdao 266111, Peoples R China
[3] Xichang Satellite Launch Ctr, Key Lab Aerosp Launch Site Reliabil, Haikou 571126, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2024年 / 217卷
关键词：
Stainless steel; Oxide scale; Corrosion; Welded joint; TEM; HOT-ROLLED STEEL; PITTING CORROSION; BEHAVIOR; FILMS; SUSCEPTIBILITY; TEMPERATURE; STRESS; PH;
D O I：
10.1016/j.matchar.2024.114431
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of thermal oxidates on the corrosion of SUS301L stainless steel welded joint was investigated using electrochemical corrosion test and TEM microstructure observation. Activation dissolution behavior without passive region was found in the potentiodynamic polarization curves on the welding zone and heat affected zone. The activation corrosion is related to the preferential dissolution of the Ni-Fe layer at the interface between chromium oxide and substrate. However, the passive region in the polarization curve reappears after the unstable Ni-Fe dissolves in the salt-frog test. The passivation behavior due to microstructure evolution beneath the thermal oxide film was discussed during the corrosion process.
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收藏
页数：13
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