Fatigue Properties and Fatigue Crack Growth in Puddled Steel with Consideration of Microstructural Degradation Processes after 100-years Operating Time

Lesiuk, Grzegorz; Szata, M.

doi:10.1016/j.proeng.2014.06.225

Cited by 7 publications

(6 citation statements)

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“…A very high phosphorus content was found in the steel tested, exceeding by three times the amount of phosphorus in structural steels produced today. High phosphorus content in puddled steel has been observed by other researchers [ 1 , 2 , 7 , 9 , 10 ]. The authors of the paper [ 9 ] found that the high silicon content was linked to processes of steel deoxidation or desulphurization.…”

Section: Results Of Tests Of the Chemical Composition Of Tank Steelsupporting

confidence: 55%

“…A microscope analysis carried out in the etched state indicated a mostly ferritic microstructure, but zones of ferritic–perlite microstructure were also observed, as presented in Figure 9 and Figure 10 . The ferritic–perlite microstructure is typical for low carbon puddled steel [ 2 , 7 , 9 , 10 ]. The simultaneous occurrence of ferritic and ferritic–perlitic zones indicates a different carbon content in the steel, which is typical for puddled steels.…”

Section: Results Of Metallographic Tests Of the Tank Steelmentioning

confidence: 99%

“…For this reason, there is great interest in the literature when it comes to the material testing of structures made from old low-carbon steel [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Studies have indicated that the degradation of microstructure due to corrosion processes leads to a decrease in steel ductility, as well as to changes in the character and rate at which fatigue cracking develops [ 1 , 2 ]. A practical indicator describing the degradation processes taking place in steel is the coefficient σ 0.2 /σ u [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…In the second half of the 19th century, many water towers were built in Lower Silesia. There were made then with weldable steel (puddled steel), which was also called puddled iron [ 1 , 2 ]. They were some of the first iron shell structures in the world.…”

Section: Introductionmentioning

confidence: 99%

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Metallographic Testing of 19th Century Steel in an Operating Water Tower

2021

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The world’s first steel structures were built towards the end of the 19th century. Some of them are still in use today, whereas others are maintained as precious technical heritage. In both cases, there may be a need to assess their technical condition and carry out repairs and reinforcements, which requires an understanding of the properties of the steel used. The few studies that have been undertaken of such steel structures indicate that the properties depend on the history of use. This paper presents the results of metallographic tests of a steel tank in a water tower built in 1884 in Lower Silesia. The chemical composition was consistent with that of the puddled steel used in the 19th century. The carbon content showed significant segregation and ranged from 0.011% to 0.072% mass. As a consequence, a typical microstructure for low-carbon steels (ferritic) was observed, changing locally to ferritic-pearlitic. The tested steel contained a very high content of phosphorus and silicon. The microstructure with numerous slags favoured the formation of surface delamination caused by the corrosion processes. The degree of corrosion of the steel of the tank was also assessed, as well as the type of corrosion inside the tank. Corrosion was favoured by the oxygen concentration cell. The results of the research will be used to assess the potential for continuing tank use and the reinforcements that have been planned. The results presented will add to the somewhat limited research results available for steel dating back to the 19th century, which is still present in many building structures. Such a database is especially needed by those designing technical measures aimed at maintaining these historical structures in good technical condition.

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Section: Results Of Tests Of the Chemical Composition Of Tank Steelsupporting

confidence: 55%

Section: Results Of Metallographic Tests Of the Tank Steelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Metallographic Testing of 19th Century Steel in an Operating Water Tower

2021

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“…The data (based on [5]) for a chemical composition range for the typical steel from 19th century has been collected in Table 1. It should be noted that the partial results (chemical composition, strength tests) for the steel ''RS'' have been partially presented in the paper [11] -where the main topic has been dominated by a low cycle fatigue of the old puddled steel (RS) with consideration of the microstructural degradation processes.…”

Section: Metallography Examinationmentioning

confidence: 99%