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Enhancement of wear resistance of ductile iron surface alloyed by stellite 6
Research highlights ► This paper deals with the improvement of the wear resistance of ductile iron surface alloyed by stellite 6 hardfacing alloy. ► The microstructure of the surface alloyed layer consisted of carbides dispersed in a Co-based solid solution matrix with dendritic structure. ► The higher wear resistance of the coated sample than that of uncoated sample attributed to the hardness of the surface alloyed layer. ► The dominant mechanism of the wear in the coated and uncoated samples was delamination wear.
Abstract This paper deals with the improvement of the wear resistance of ductile iron surface alloyed by a hypoeutectic stellite 6 alloy. In this regard, the surface alloyed layer with 3mm thickness deposited on ductile iron using tungsten inert gas (TIG) surface processing. The microstructure, hardness and wear resistance of surface alloyed layer were investigated using optical microscopy, scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction analysis, Vickers hardness (HV0.3) and pin-on-plate tests. The results showed that the microstructure of the surface alloyed layer consisted of carbides dispersed in a Co-based solid solution matrix with dendritic structure. This microstructure was responsible for the improvement of the hardness and wear resistance of the coating. Further investigations showed that the dominant mechanism of the wear in the coated and uncoated samples was delamination wear.
Enhancement of wear resistance of ductile iron surface alloyed by stellite 6
Research highlights ► This paper deals with the improvement of the wear resistance of ductile iron surface alloyed by stellite 6 hardfacing alloy. ► The microstructure of the surface alloyed layer consisted of carbides dispersed in a Co-based solid solution matrix with dendritic structure. ► The higher wear resistance of the coated sample than that of uncoated sample attributed to the hardness of the surface alloyed layer. ► The dominant mechanism of the wear in the coated and uncoated samples was delamination wear.
Abstract This paper deals with the improvement of the wear resistance of ductile iron surface alloyed by a hypoeutectic stellite 6 alloy. In this regard, the surface alloyed layer with 3mm thickness deposited on ductile iron using tungsten inert gas (TIG) surface processing. The microstructure, hardness and wear resistance of surface alloyed layer were investigated using optical microscopy, scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction analysis, Vickers hardness (HV0.3) and pin-on-plate tests. The results showed that the microstructure of the surface alloyed layer consisted of carbides dispersed in a Co-based solid solution matrix with dendritic structure. This microstructure was responsible for the improvement of the hardness and wear resistance of the coating. Further investigations showed that the dominant mechanism of the wear in the coated and uncoated samples was delamination wear.
Enhancement of wear resistance of ductile iron surface alloyed by stellite 6
Arabi Jeshvaghani, R. (author) / Shamanian, M. (author) / Jaberzadeh, M. (author)
2010-11-25
6 pages
Article (Journal)
Electronic Resource
English
Enhancement of wear resistance of ductile iron surface alloyed by stellite 6
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