INVESTIGATION OF STEELS FOR IMPROVED WELDABILITY IN SHIP CONSTRUCTION - PHASE II.

Much of the modernization taking place in the world shipbuilding industry in the last decade has centered around the use of new, more efficient welding techniques. The potential increase in productivity with new high-deposition rate welding processes is considerable. However, in order to take full advantage of the benefits of the new welding practices, additional metallurgical control appears necessary for minimizing heat-affected zone and weld-metal property degradation. The Ship Structure Committee is now sponsoring a project directed toward determining the weld procedure and metallurgical control necessary to develop adequate toughness in the weldment, using high-deposition rate welding procedures. This report describes the second phase of that work.