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Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube

Chaiyawat Peeratatsuwan, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakhonratchasima, 30000, THAILAND, Thee Chowwanonthapunya, Faculty of International Maritime Studies, Kasetsart University, Sriracha , Chonburi 20230, THAILAND
2020 International Journal of Integrated Engineering  

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The comprehension of the microstructure change and mechanical property degradation are of particular importance for assessing the integrity of aging boiler tubes. This paper describes the investigation of microstructure evolution and mechanical property degradation of SA210 A1 steel used in an actual boiler condition. The investigation deals with visual inspection, chemical composition analysis, micrograph study using Energy Dispersive Spectroscopy-Scanning Electron Microscopy (EDS-SEM),
more » ... test and hardness test. The result showed that the prolonged operating period in the high temperature condition resulted in the reduction of the mechanical properties of the SA 210 A1 steel tube. The study also indicated the presence of the onset of the pearlite disintegration and coagulation, resulted from the microstructure degradation of the aged steel tube after the elevated temperature service in a boiler. It is advisable that the microstructure technique, i.e. metallurgical replica, should be added to the common on-site inspection to increase the effectiveness of the maintenance and maintain the availability of the steam generating units.
doi:10.30880/ijie.2020.12.08.012 fatcat:dwtecams35bltpx6tc5dtkuobe
Citation

Chaiyawat Peeratatsuwan, Faculty of Engineering and Architecture, Rajamangala University of Technology Isan, Nakhonratchasima, 30000, THAILAND, Thee Chowwanonthapunya, Faculty of International Maritime Studies, Kasetsart University, Sriracha , Chonburi 20230, THAILAND. "Study of Microstructure and Mechanical Property Degradation of SA210 A1 Boiler Tube." International Journal of Integrated Engineering 12.8 (2020)