Kim, Ju-Heon Kim, Dong-Ik Suwas, Satyam Fleury, Eric Yi, Kyung-Woo 2024-01-20T12:33:50Z 2024-01-20T12:33:50Z 2021-09-01 2013-04 0030-770X https://pubs.kist.re.kr/handle/201004/128219 The high-temperature oxidation behavior of modified 304 austenitic stainless steels in a water vapor atmosphere was investigated. Samples were prepared by various thermo mechanical treatments to result in different grain sizes in the range 8-30 mu m. Similar I 3 pound grain boundary fraction was achieved to eliminate any grain-boundary characteristics effect. Samples were oxidized in an air furnace at 700 A degrees C with 20 % water vapor atmosphere. On the fine-grained sample, a uniform Cr2O3 layer was formed, which increased the overall oxidation resistance. Whereas on the coarse-grained sample, an additional Fe2O3 layer formed on the Cr-rich oxide layer, which resulted in a relatively high oxidation rate. In the fine-grained sample, grain boundaries act as rapid diffusion paths for Cr and provided enough Cr to form Cr2O3 oxide on the entire sample surface. English SPRINGER/PLENUM PUBLISHERS CHROMIUM DIFFUSION 304-STAINLESS-STEEL RESISTANCE KINETICS OXIDES CR2O3 Grain-Size Effects on the High-Temperature Oxidation of Modified 304 Austenitic Stainless Steel Article 10.1007/s11085-012-9347-x 1 OXIDATION OF METALS, v.79, no.3-4, pp.239 - 247 OXIDATION OF METALS 79 3-4 239 247 scie scopus 000316397900003 2-s2.0-84876502611 Metallurgy & Metallurgical Engineering Metallurgy & Metallurgical Engineering Article CHROMIUM DIFFUSION 304-STAINLESS-STEEL RESISTANCE KINETICS OXIDES CR2O3 Austenitic stainless steel Grain size effect Oxidation resistance Grain boundary