Research on Microstructure Evolution and Tensile Property Change of Austenitic Heat-resistant Steel after Long-term Service
Carbon neutral technology has become one of the most effective solutions for thermal power generation.HR3C austenitic heat-resistant steel has become a typical material for high-temperature components used in ultra-supercritical units because of its excellent high-temperature performance.SEM,TEM and EBSD techniques were used to observe the microstructure of the unserved samples and samples with 35564 h and 67705 h of service,respectively,while the room temperature tensile and high temperature tensile properties of several materials were measured.The results show that HR3C heat-resistant steel has good high-temperature stability,and the grain structure is consistent with that of the unserved sample.The tensile properties and tensile properties do not change significantly with the non-serviced samples at room-temperature and high-temperature.
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