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首页> 外文期刊>Journal of Materials Engineering and Performance >Studies on Hot Corrosion of the Microstructurally Different Regions of 2.25Cr-1Mo (T22) Boiler Tube Steel Weldment
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Studies on Hot Corrosion of the Microstructurally Different Regions of 2.25Cr-1Mo (T22) Boiler Tube Steel Weldment

机译：2.25Cr-1Mo（T22）锅炉管钢焊缝微观结构不同部位的热腐蚀研究

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摘要

This study examines the effect of microstructurally different regions on the hot corrosion of tungsten inert gas weldment in 2.25Cr-1Mo (T22) boiler tube steel. Various regions of weldment were oxidized in molten salt Na2SO4-60% V2O5 environment at 900 °C. The base metal was found to oxidize at much higher rates than the weld metal and the heat-affected zone. Oxide scales formed in the three regions were compared by scanning electron microscopy with energy dispersive of X-ray analysis, X-ray diffraction pattern, and electron probe microanalysis. The research investigates the formation of inner scales with free Cr over the HAZ.
机译：本研究研究了微观结构不同区域对2.25Cr-1Mo（T22）锅炉管钢中钨极惰性气体保护焊件热腐蚀的影响。在900°C的熔融盐Na2 SO4 -60％V2 O5 环境中，焊件的各个区域均被氧化。发现贱金属的氧化速率远高于焊缝金属和热影响区。通过扫描电子显微镜，X射线分析的能量分散，X射线衍射图和电子探针显微分析，比较了在这三个区域中形成的氧化皮。该研究调查了热影响区上带有游离铬的内部水垢的形成。

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