An Investigation about Microstructures, Mechanical Properties and Corrosion Behaviour of the TIG - MIG Hybrid Welded Dissimilar UNS 2205 and is 2062 Steels

N. M. Raj, N. M. Kumar, S. Nagaraja, S. Paulsingarayar
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Abstract

The connecting of contrasting metals, namely double stainless steel to steel made of carbon, has taken place. performed using a hybrid welding system. A TIG and MIG welding joining based hybrid joining method was designed. The microstructures of the dissimilar metal joints were studied and the grains are coarser as contrast to the use of a single the welding process process by itself. With the addition of TIG welding to the process of MIG welding, the water-holding capacity of the metal in molten state pool is significantly improved. The nominal corrosion behaviour of the weldments was found better than the single arc welding system alone. The passivation behaviour of the joints was in the similar line to that of double stainless steel base metal. The pitting resistance of the joints in 1 M NaCl solution was inferior to the base metals.
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关于 TIG - MIG 混合焊接异种 UNS 2205 和 is 2062 钢的微观结构、机械性能和腐蚀行为的研究
使用混合焊接系统实现了对比金属的连接,即双层不锈钢与碳素钢的连接。设计了一种基于 TIG 和 MIG 焊接的混合连接方法。对异种金属接头的微观结构进行了研究,与使用单一焊接工艺相比,晶粒更粗。在 MIG 焊接工艺中加入氩弧焊后,熔池金属的保水能力显著提高。焊接件的名义腐蚀性能优于单独的单弧焊接系统。接头的钝化性能与双层不锈钢母材的钝化性能相似。接头在 1 M NaCl 溶液中的抗点蚀性能不如母材。
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