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首页> 外文会议>International conference on electron microscopy >The microstructure of weld overlay Ni-base alloy deposited on carbon steel by CMT method
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The microstructure of weld overlay Ni-base alloy deposited on carbon steel by CMT method

机译：CMT法在碳钢上沉积在碳钢上的焊接覆盖Ni基合金的微观结构

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Ni-base alloys, like Inconel 625, exhibit a high temperature corrosion and oxidation resistance. For this reason, these alloys are typically used as a one of the most important coating material and can be applied in a different environments and elements of devices having various applications. In this work, Inconel 625 was deposited onto a carbon steel P235GH by Cold Metal Transfer method. Due to the segregation of Ni, Cr, Nb and Mo elements the Inconel 625 weld overlays cladded on boiler pipes P235GH obtained the dendritic structure, with the formation of a second phases at the end of solidification. The presence of γ (with high dislocation density), the Laves and (Nb, Ti)C phases was revealed by means of TEM examinations. The multipoint EDS analysis confirmed the presence of low Fe concentration in the Inconel 625 alloy coatings. The concentration profiles of Ni, Cr, Mo and Nb performed across the dendritic structure showed segregation of these elements.
机译：Ni-Base合金，如625，表现出高温腐蚀和抗氧化性。因此，这些合金通常用作最重要的涂层材料之一，并且可以应用于具有各种应用的装置的不同环境和元件中。在这项工作中，通过冷金属转移方法将625沉积在碳钢P235GH上。由于Ni，Cr，Nb和Mo元件的偏析，Inconel 625焊接覆盖层在锅炉管P235GH上覆盖在树突状结构上，在凝固结束时形成第二阶段。通过TEM检查揭示了γ（具有高分位密度），Laves和（Nb，Ti）C相的存在。多点EDS分析证实了Inconel 625合金涂层中低Fe浓度的存在。在树突结构上进行的Ni，Cr，Mo和Nb的浓度分布显示了这些元素的偏析。

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