Title: EFFECT OF MICROBE ON THE CORROSION BEHAVIORS AND MECHANICAL PROPERTIES OF 25 CARBON STEEL IN TROPICAL SEAWATER CONDITION
Abstract:In this work,the single effect of microbe on the corrosion behaviors of 25 carbon steel is studied by comparing the average corrosion depth of the carbon steel in natural seawater and in sterile seawa...In this work,the single effect of microbe on the corrosion behaviors of 25 carbon steel is studied by comparing the average corrosion depth of the carbon steel in natural seawater and in sterile seawater in tropic condition.Through examining the strength and Charpy impact absorbed energy after different corrosion periods,the effects of microbiologically influenced corrosion(MIC) process on mechanical properties of 25 steel are illustrated.The results show that the bacterial activity at the interface accelerates the corrosion of 25 steel.When the corrosion time is 365 d,the average corrosion depth of 25 steel in natural seawater is 2.6 times higher than that in sterile seawater.Localized attack is also observed on the specimens immersed in natural seawater for 365 d.The corrosion of 25 steel in natural seawater and sterile seawater reduces the ultimate tensile strength of 25 steel,and this effect is more notable during the corrosion in natural seawater than in the sterile seawater.The analysis reveals that the decrease of the ultimate tensile strength is related to the increase of average corrosion depth.MIC does not decrease the elongation and Charpy impact absorbed energy of the annealed 25 steel,and MIC induced hydrogen embrittlement is not found.Read More
Publication Year: 2010
Publication Date: 2010-10-18
Language: en
Type: article
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Cited By Count: 3
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