在某电站锅炉进行定期检验过程中,得到不同运行时间下12Cr1MoV显微组织和力学性能的变化,主要是珠光体的消散与分解碳化物从固溶体中脱溶,碳化物粗化并向晶界转移以及晶粒长大。通过宏观检查、材料化学成分分析、显微组织变化和硬度测量对其高温下的组织结构变化进行研究。 During regular inspection of a boiler in a power plant, the microstructures and mechanical properties of 12Cr1MoV under different operating time were obtained, mainly including the dissolution and decomposition of pearlite, the desolventizing of carbides from the solid solution, the coarsening of carbides and the transfer to the grain boundaries As well as grain growth. Through the macroscopic examination, material chemical composition analysis, microstructure changes and hardness measurements of its high temperature structure changes.