Abnormal selective dissolution by the partial recrystallization in a plastically deformed austenitic stainless steel

时间:2022-01-04作者:浏览量:110


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