This article makes an attempt to investigate the outcome of activated flux and filler wire in addition to A-TIG welding and TIG welding of Inconel 625 respectively. Ni-Cr-Mo enriched filler namely ERNiCrMo-3 was used to join 6.5-mm-thick plates. Microstructure characterization, mechanical properties evaluation and secondary dendritic arm spacing measurements were carried out to find the cause of the perceived differences. Tensile test failures were observed at the weld zone in both welding processes. Charpy impact studies showed that weldment using A-TIG revealed a low toughness value compared to the TIG weldment. Root bend test showed no discontinuity in both fusion zones and hence, the weldment was produced without defect. The deleterious laves phase was reduced when activated flux and fillers were used. Corrosion performance was undertaken in a 3.5 wt% NaCl solution, to illustrate the outstanding corrosion resistance in Inconel 625’s fusion zone using A-TIG and TIG welding processes.

本文尝试除了分别对Inconel 625进行A-TIG焊接和TIG焊接以外，还研究活化焊剂和填充焊丝的结果。富含Ni-Cr-Mo的填料ERNiCrMo-3用于连接6.5毫米厚的板。进行了微结构表征，机械性能评估和第二次树突臂间距测量，以找出引起差异的原因。在两个焊接过程中，在焊接区均观察到拉伸测试失败。夏比冲击研究表明，与TIG焊件相比，使用A-TIG的焊件显示出较低的韧性值。根弯曲试验表明，在两个熔合区都没有间断，因此，焊接件没有缺陷。当使用活化的助熔剂和填料时，有害的拉维相减少。