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首页> 外文期刊>Journal of Materials Engineering and Performance >Characterization of the Micro-Welding Process for Repair of Nickel Base Superalloys
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Characterization of the Micro-Welding Process for Repair of Nickel Base Superalloys

机译：镍基高温合金微焊接工艺的表征

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摘要

Micro-welding is a low-heat input process whereby a metal or cermet, is deposited by the generation of a low-power arc between a consumable electrode and a substrate. The low-heat input of this process offers unique advantages over more common welding processes such as gas tungsten arc, plasma arc, laser, and electron beam welding. At present, the repair of turbine blades and vanes commonly involves gas tungsten arc welding and these components are susceptible to heat affected zone cracking during the weld repair process; vacuum brazing is also used but mainly on low-stress components such as stators. In this study, the low-heat input characteristic of micro-welding has been utilized to simulate repair of Inconel (Trade Mark of Special Metals) 625, Inconel 718, and Inconel 722 filler alloys to a cast Inconel 738 substrate. The effect of micro-welding process parameters on the deposition rate, coating quality, and substrate has been investigated.
机译：微焊接是一种低热量的输入过程，通过该过程，可消耗的电极和基板之间会产生低功率电弧，从而沉积金属或金属陶瓷。与气体钨极电弧，等离子弧，激光和电子束焊接等更常见的焊接工艺相比，该过程的低热量输入具有独特的优势。目前，涡轮叶片和叶片的维修通常涉及钨极电弧焊，这些部件在焊接维修过程中易受热影响区裂纹的影响。也使用真空钎焊，但主要用于定子等低应力部件上。在这项研究中，微焊接的低热量输入特性已被用于模拟将Inconel（特殊金属商标）625，Inconel 718和Inconel 722填充合金修复到铸造的Inconel 738基底上。研究了微焊接工艺参数对沉积速率，涂层质量和基材的影响。

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