The Mottling Appeared on Radiograph of Weldments and Castings (6th Report)

The mottling and high temperature ductility

Abstract

Effects of the mottled appearance on the high temperature ductility was investigated. Longitudinal all-weld-metal specimens of as welded and annealed conditions with different levels of contrast were prepeared. The results may be summalized as follows.
1. Progressive increase in the contrast produced a marked decrease in high temperature ductility.
2. The decrease in ductility was observed for both specimens of as welded and annealed conditions. The results obtained seem to suggest a ceartain relation between the mottled appearance and the less ductility.