Abnormal selective dissolution by the partial recrystallization in a plastically deformed austenitic stainless steel
作者
Zhou, QW (Zhou, Qingwen) 1
Zheng, ZJ (Zheng, Zhijun) 2
Gao, Y (Gao, Yan) 1, 3
CORROSION SCIENCE
卷188
文献号109548
DOI10.1016/j.corsci.2021.109548
出版时间AUG 1 2021
文献类型Article
摘要
The influence of microstructure evolution during ageing on the corrosion behavior of deformed Super304H stainless steel was studied. For deformed specimen after ageing, an abnormal dissolution current peak existed in the potentiodynamic polarization curve at early passivation when surface passive film was thin and sensitive to galvanic corrosion, which terminated as passivation proceeded to a complete and compact film. Partial recrystallization during ageing formed uneven microstructure where the recrystallized coarse grains were selectively dissolved due to their inferior corrosion resistance compared to the residual nano-grains. Increased recrystallization region in the over-deformed state intensified the selective dissolution to a higher current peak.
关键词
作者关键词Austenitic stainless steelNanocrystallizationAgeingRecrystallizationGalvanic corrosion
Keywords PlusCORROSION BEHAVIORMICROSTRUCTURAL EVOLUTIONSDEFORMATION MECHANISMSSTIMULATED NUCLEATIONSURFACEREVERSIONMARTENSITESTRAINNANOCRYSTALLIZATIONPRECIPITATION
作者信息
通讯作者地址
Gao, Yan
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
2 South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510641, Guangdong, Peoples R China
3 Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China
电子邮件地址meygao@scut.edu.cn
类别/分类
研究方向Materials ScienceMetallurgy & Metallurgical Engineering