|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Technical Division Student Poster Competition
||SPG-42: The Microstructure Characterization and Precipitate Simulation of G115 Heat Resistance Steel during Creep
||Yunhe Yu, Chi Zhang, Zhengdong Liu, Hao Chen, Zhigang Yang
|On-Site Speaker (Planned)
Steam temperature in power plants has been continually elevated on account of energy conservation and environmental protection, therefore microstructure stability is essential for heat resistance steels. In this work, precipitate evolution and lath coarsening of G115 martensitic heat resistance steel at 650 ℃ for different time durations were characterized detailedly with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electron back-scattered diffraction (EBSD). Phase equilibrium were calculated with Thermocalc. The nucleation, growing and coarsening of precipitates (including M23C6, Laves phase and MX) were simulated based on a modified Langer-Schwartz model. The simulation results were basically consistent with experimental results.