The failure mechanism and the prevention method for TP347H stainless steel tube serviced in boiler reheater in a coal-fired power plant are presented in this paper. Through studies of detailed mechanical characteristics, microstructure, chemical composition and magnetic property, the mechanisms of reheater tube failure are found to be attributed to long-term overheating, second phase precipitating and coarsening along the grain boundary and formation of high content of deformation induced martensite (DIM) structure.

中文翻译：

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燃煤电厂锅炉再热器TP347H奥氏体不锈钢管的故障分析

提出了燃煤电厂锅炉再热器用TP347H不锈钢管的失效机理及预防方法。通过详细的力学性能，微观结构，化学成分和磁性能的研究，发现再热器管的失效机理是由于长期过热，沿晶界的第二相沉淀和粗化以及高含量的变形诱发马氏体的形成。 （DIM）结构。