The probable reasons for evolution of weld porosity and solidification cracking and the structure- property relationship in aluminium welds were investigated. Aluminium plates (1xxx series) were welded by Tungsten Inert Gas (TIG) welding process, 5356 filler metal was used and heat input was controlled by varying welding current (145A, 175A and 195A). The welded samples were examined under opti...

Abstract Duplex stainless steels offer a high strength alternative to steel, while providing excellent corrosion resistance, due their dual-phase microstructure. This microstructure can be significantly influenced during welding, thus the maximum recommended heat input is usually 2.5 kJ/mm. In this research, we inspected (3 kJ/mm) weldability of NSSC 2120 lean duplex which designed and develope...

With the rapid increase in size of container ships, steel plates used for ship hulls have increased thickness. The use thick leads to an welding. Alternative welding processes such as electro gas (EGW), with high heat input been replacing multi-pass flux cored arc process. Shipbuilding companies tended EGW increasingly improve productivity. However, because toughness tends decrease thicker plat...