Impact of Environmental and Electrochemical Conditions on Time to Failure and Embrittlement Index of S2507 Stainless Steel: A Study of Microstructural Characterization

Abstract:

This work examines the effects of environmental and electrochemical conditions on the Time to Failure (TTF) and the Embrittlement Index (EI) of S2507 stainless steel and observes the alterations in microstructure which occurred before and on solution annealing. Experimental evidence demonstrates that high degradation of the material is caused by differences in the electrochemical potentials and exposures to corrosive conditions. The possible connection between TTF, EI and the material degradation is discussed with an emphasis on the influence of electrochemical stress on the progression of the hydrogen embrittlement. Also, examination of microstructures with the Scanning Electron Microscope (SEM) is used, offering an explanation of alterations in grain architecture and morphological distribution before and after solution annealing, which plays the role of explaining the behavior of the material at stresses. The results have noted that environmental and electrochemical conditions should be optimized to improve the durability of S2507 stainless steel.

• Periodical: Solid State Phenomena (Volume 394)
• Pages: 63-71
• DOI: https://doi.org/10.4028/p-Z2aV61
• Online since: June 2026
• Authors: R. Tejas*, Niranjan Hiremath, Avinash Lakshmikanthan, V. Shamanth
• Keywords: Embrittlement Index, Hydrogen Embrittlement, S2507 Stainless Steel, SEM, Time to Failure (TTF)

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