期刊
CORROSION SCIENCE
卷 195, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109946
关键词
A; stainless steel; B; galvanostatic; C; intergranular corrosion
资金
- JSPS KAKENHI [17H04899]
- Grants-in-Aid for Scientific Research [17H04899] Funding Source: KAKEN
This study evaluated the crystallographic characteristics of grain boundaries to assess the susceptibility to intergranular corrosion. It was found that the energy of grain boundaries was the only variable able to characterize the susceptibility.
Failures caused by intergranular corrosion have often occurred in structures made of stainless steels, and it is necessary to establish a technique to evaluate the susceptibility to such corrosion. This study investigated the crystallographic characteristics of grain boundaries to evaluate the susceptibility. To measure the characteristics, microscopic analyses were performed by the techniques of electron backscattered diffraction and thermal etching with geometric measurements. Then, oxalic acid etching was conducted. The corrosion grooves became larger with increasing grain boundary energy, and as a result, it was found that the energy was the only variable able to characterize the susceptibility.
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