Microstructural evolution and its effect on corrosion behavior and mechanism of an austenite-based low-density steel during aging

被引：49
作者：
Wu, Wei [1 ,2 ]
Qin, Lizhi [1 ]
Cheng, Xuequn [1 ]
Xu, Feifan [3 ]
Li, Xiaogang [1 ]
机构：
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
[2] Shanghai Univ Elect Power, Shanghai Engn Res Ctr Energy Saving Heat Exchange, Shanghai Key Lab Mat Protect & Adv Mat Elect Power, Shanghai 200090, Peoples R China
[3] Shougang Grp Co Ltd, Res Inst Technol, Beijing 100043, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 212卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Low -density steel; B2; phase; Corrosion resistance; Corrosion product film; Aging treatment; Microgalvanic effect; DUPLEX LIGHTWEIGHT STEELS; HEAT-AFFECTED ZONE; HYDROGEN EMBRITTLEMENT; DEFORMATION-BEHAVIOR; GRAIN-REFINEMENT; WEATHERING STEEL; STAINLESS-STEEL; STRENGTH; RESISTANCE; ALLOY;
D O I：
10.1016/j.corsci.2022.110936
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructural evolution during aging and its influence on corrosion behavior and mechanism of the Fe19Mn-9Al-0.8 C-5Ni low-density steel (LDS) were studied. The results showed that the morphology, chemical property and proportion of the B2 phase in the LDS changed with aging time. These changes effectively inhibited the microgalvanic effect between different phases at the initial corrosion and the local acidification at the late stage. Accordingly, the corrosion resistance of the aged LDSs continually increased as the aging time extended. Moreover, the corrosion mechanism and the properties of corrosion product film of the Fe-19Mn-9Al-0.8 C-5Ni LDS during aging were revealed in detail.
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页数：15
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