Investigation of corrosion fracture of welded joints made from Ni-Cr-Mo alloys in production of titanium dioxide

摘要

Susceptibility of ThyssenKrupp VDM nickel-chromium-molybdenum alloys to corrosion cracking has been evaluated. Specimens with circumferential welds made by the argon-arc method using filler wire of the AWS A.5.14ERNiCrMo-13 grade have been tested in titania production environments. It is shown that reliable data can be generated from testing experimental models or welded stressed samples with a circumferential weld simulating residual stresses in a structure.