Study On The Failure Behavior Of Typical Pressure Vessel Timber In The Synergy Between Corrosive Environment And Stress Load

Pressure vessels are widely used in the field of people’s life and social production, the materials used in harsh working conditions, by the corrosive medium, alternating stress, corrosive medium and stress load synergy impact, easily lead to the failure behavior. Therefore, to ensure the safe use of the pressure vessel, must take full account of the failure behavior, research in the corrosive medium, alternating stress, the failure mechanism under the corrosive medium and stress load synergy.The conventional method is to study the failure of pressure vessel in the method of separated morphological analysis, mechanisms, as well as the way how to prevent in corrosive media or stress environment.There are obvious differences in the actual use of the experimental environment and pressure vessel material conditions, and it is not representative of the typical failure mechanism of the pressure vessel. Based on the foundation of injury thermodynamic theory, we are to study the electrochemical energy, including injury thermodynamic relations. By interring the mechanism, establish a foundation for conducting research and environmental corrosion and stress synergy. Corrosion current and the mass loss by the introduction of the energy dissipation in the process of corrosion damage.This paper selected part of the case studies of the pressure equipment materials failure accident.Studied on the analysis material increasing with the loading in a particular medium, in its natural state, elastic deformation, the failure behavior of the plastic deformation state, analysising the behavior and mechanism of material failure in corrosive media and load synergy.