The phenomenon of stress corrosion cracking extensively exists in equipments and pipelines of process plants due to aggravated tendency of raw materials to poor quality, especially in complex media environment, the factors causing stress corrosion cracking are very complex, sometimes a certain medium plays a dominating role, sometimes several kinds of media act together, and sometimes the actions of some media change to each other in different periods. In this paper, the laws of competition, promotion or suppression among multiple mechanisms upon stress corrosion cracking due to multiple causes are described through failure analysis of stress corrosion cracking accident cases such as cracking of inner wall cladding of cyclone separator for coal chemical plant, explosion of gasification furnace for coal chemical plant, etc., and analysis and judgment methods of their dominating mechanisms, influential laws of secondary mechanisms and preventive measures are proposed.
Failure Analysis Cases of Stress Corrosion Cracking in Complex Media Environments
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Ai, Z, Chen, X, Fan, Z, & Li, R. "Failure Analysis Cases of Stress Corrosion Cracking in Complex Media Environments." Proceedings of the ASME 2014 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Anaheim, California, USA. July 20–24, 2014. V06AT06A073. ASME. https://doi.org/10.1115/PVP2014-28687
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