摘要
The relationship between evolution in grain boundary characteristics and intergranular corrosion properties of cold rolled 443 ultra-pure ferritic stainless steel was investigated.The results showed that low-angle(LA)grain boundaries,special grain boundaries(SGB),and high-angle(HA)grain boundaries had a high intergranular corrosion sensitivity after cold deformation in reducing acid medium.In oxidative acid medium,the LA and SGB boundaries had a high intergranular corrosion resistance in comparison to HA boundaries,and their inhibitory effect on the corrosion continuance of the dynamic recrystallization high-angle(RHA)grain boundaries can improve the corrosion resistance of the RHA grain boundaries.
基金
financially supported by the National Natural Science Foundation of China(Nos.51871061 and 51901046)
作者简介
Corresponding author:Yangting Sun,E-mail address:sunyangting@fudan.edu.cn.
