The Microstructure, Properties and Corrosion Resistance of Type 312 Overlay in Batch Digesters, 2002 Fall Technical Conference
The paper describes the microstructure and properties of Type 312 overlay applied by gas-metal-arc welding
(GMAW) using a patented process. The propensity of weld solidification cracking during overlay welding is
discussed. Results of the analyses of boat samples from the overlaid digesters after service are presented. The
overlay’s corrosion resistance in batch digesters is discussed.