Chalmers Conferences, The 6th Swedish Production Symposium

MICTOSTRUCTURAL ANALYSIS OF LASER CLADDING OF STELLITE 6 ON DUCTILE IRON
Ebrahim Harati, Farshid Malek Ghaini, Mohammad Javad Torkamany

Last modified: 2014-11-22

Abstract


Stellite 6 alloy in the form of powder was deposited on a ductile cast iron substrate using a low power pulsed Nd:YAG laser. The effects of process parameters on the resulting microstructure and hardness were studied with emphasis on the single and multi-track deposits. The results revealed that the cladded layers consist of carbides dispersed in a Co-based solid solution matrix with a dendritic structure. Multi-track cladded layers have coarser dendrites compared to those of single-track cladded layer due to a longer exposure time at high temperature and slower cooling rates as more layers were deposited.


Keywords


Laser Cladding, Stellite 6, Microstructure, Ductile cast iron

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