Hydrogen-facilitated corrosion and stress corrosion cracking of austenitic stainless steel of type 310 |
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Authors: | Qiao Lijie Chu Wuyang Miao Huijun Xiao Jimei Guo Peixin |
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Affiliation: | (1) Department of Materials Physics, University of Science and Technology Beijing, 100083 Beijing, People’s Republic of China |
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Abstract: | The effects of hydrogen précharge and stress on anodic dissolution for Type 310 austenitic stainless steel (ASS) have been
investigated. An experiment determining the effect of hydrogen on stress corrosion cracking (SCC) was carried out in a boiling
42 pct MgCl2 solution and in a 2.5 mo/L H2SO4 + 1 mol/L HC1 solution. The results showed that both hydrogen and stress would increase the dissolution rate, and the effects
of hydrogen and stress on the dissolution rate were synergistic rather than simply additive. Hydrogen lowered the threshold
stress and the shortened fracture time of SCC in a boiling MgCl2 solution by a factor of 1/5 and 10, respectively. |
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