Crack initiation in steel parts working under thermo-mechanical fatigue conditions Online publication date: Fri, 28-Dec-2007
by Donat Renowicz, Marek Ciesla
International Journal of Computational Materials Science and Surface Engineering (IJCMSSE), Vol. 1, No. 4, 2007
Abstract: Thermo-mechanical fatigue conditions influencing the processes of material degradation and durability have been analysed in this paper. The crack initiation process in T-connection working in the steam pipeline has been assumed as the critical state of material for life assessment criterion. For elaboration of simulation programme of mechanical loading spectrum and temperature changes, the operation data of the object have been applied. It was used for elaboration of laboratory parameter investigations. For lifetime prediction of the parts of pipeline, the spectrum of thermo-mechanical loading under real conditions of work has been adapted. This paper refers to the research on steel 10H2M (10CrMo.910) used in the conventional boilers, superheaters and pipelines in power plants. The parts working in energy industry very often decide about disposal of the boiler. [Received 13 November 2006, Accepted 22 January 2007]
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