TITLE:
Weldability Assessment of Preheated Ductile Iron Microstructures
AUTHORS:
Dakwa Yusufu Kwa, Joseph Olatunde Borode, Itopa Monday Momoh
KEYWORDS:
Submerged Arc Welding; Fusion Zone; Un-Mixed Zone; Heat Affected Zone
JOURNAL NAME:
Journal of Minerals and Materials Characterization and Engineering,
Vol.11 No.10,
October
31,
2012
ABSTRACT: When joining ductile iron by submerged arc welding technique, a suitable welding speed and current, among other fac- tors, need to be skillfully put in place so as to enhance good welding. This work is based on microstructural examina- tion of preheated ductile iron at various temperatures ranging between 100°C - 400°C. Optical microscope was used for the microstructure analysis. The result shows varied complex microstructures at the fusion zone, un-mixed zone, par- tially melted zone and at the heat affected zone.