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타이타늄-구리 폭발압접 이종 클래드 판재의 TIG 용접 건전성 평가
조평석 ( Pyeong-seok Jo ),윤창석 ( Chang-seok Youn ),황효운 ( Hyo-woon Hwang ),이동근 ( Dong-geun Lee ) 한국열처리공학회 2021 熱處理工學會誌 Vol.34 No.2
Cladding material, which can selectively obtain excellent properties of different metals, is a composite material that combines two or more types of dissimilar metals into one plate. The titanium-copper cladding material between titanium which has excellent corrosion resistance and copper which has high thermal and electrical conductivity, are highly valuable composite materials. It can be used as heat exchangers with high conductivity under severe corrosion conditions. In order to apply the clad plate to the heat exchanger, it must be manufactured in the form of a tube and additional welding is required. It is important to select the cladding material manufacturing process and the welding process. The process of manufacturing the cladding material includes extrusion, rolling, and explosive bonding. Among them, the explosive bonding process is suitable for additional welding because no heat-affected zone is formed. In this study TIG welding of the explosive-bonded dissimilar clad plates was successfully performed by butt welding. The microstructures and bonding interface of the welded part were observed, and the effect of the bonding layer at the welding interface and the intermetallic compounds on the mechanical properties and tensile plastic deformation behaviors were analyzed. And also the integrity of TIG-welded dissimilar part was evaluated. (Received February 25, 2021; Revised March 4, 2021; Accepted March 9, 2021)
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