Abstract In the course of the deposition of Inconel 825 layer on AISI304 stainless steel by tungsten inert gas (TIG) cladding route, the geometry of the single line clad tracks for different processing conditions was evaluated and correlated with the employed processing current and pre-placed powder thickness. The analysis revealed an enhancement in the clad track width, clad height along with the dilution ratio, and the clad angle for increasing the TIG current. Nevertheless, no specific effect of pre-placed powder thickness was recorded. A detailed EDS analysis at the interface of the clad layer revealed an enhancement in the dilution of Inconel 825 with the substrate material in the clad zone and vice-versa in the substrate region for increasing the processing current. The micro-hardness value recorded at the cross-section of the clad track shows a consistent improvement (300–350 HV) as compared to the substrate material (220 HV). The sliding wear test of the samples extracted from the clad tracks performed against harden-die steel plate shows almost negligible height loss (6 µm) as compared to the uncoated steel specimen (125 µm) under similar test condition.

中文翻译：

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采用 TIG 熔覆法在 AISI 304 钢上制造的单线 Inconel 825 层的几何评估和力学特性

摘要 在采用钨惰性气体 (TIG) 熔覆工艺在 AISI304 不锈钢上沉积 Inconel 825 层的过程中，评估了不同工艺条件下单线熔覆轨道的几何形状，并将其与采用的工艺电流和预置粉末厚度。分析表明，包层轨道宽度、包层高度以及稀释比和包层角度都会增加，以增加 TIG 电流。然而，没有记录到预先放置的粉末厚度的具体影响。包覆层界面处的详细 EDS 分析揭示了 Inconel 825 与包覆区中的衬底材料的稀释增强，反之亦然，以增加处理电流。与基板材料 (220 HV) 相比，在复合轨道横截面记录的显微硬度值显示出一致的改进 (300-350 HV)。在类似的测试条件下，从复合轨道中提取的样品对硬化模具钢板进行的滑动磨损试验显示，与未涂层钢试样 (125 µm) 相比，高度损失 (6 µm) 几乎可以忽略不计。