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Study of laser cladding of stellite 6 on nickel superalloy substrate with two different energy inputs

Journal Article


Abstract


  • Stellite 6 was deposited by laser cladding on a nickel superalloy substrate (NIS) with energy inputs of 1 kW (NIS 1) and 1.8 kW (NIS 1.8). The chemical compositions and microstructures of these coatings were characterized by atomic absorption spectroscopy, optical microscopy and scanning electron microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was examined using a pin-on-plate (reciprocating) wear testing machine. The results showed less cracking and pore development for Stellite 6 coatings applied to the nickel superalloy substrate with the lower heat input (NIS 1). Further, the Stellite coating for NIS 1 was significantly harder than that obtained for NIS 1.8. The wear test results showed that the weight loss for NIS 1 was much lower than for NIS 1.8. It is concluded that the lower hardness of the coating for NIS 1.8, together with the softer underlying substrate structure, markedly reduced the wear resistance of the Stellite 6 coating.

Publication Date


  • 2014

Citation


  • Kusmoko, A., Dunne, D., Li, H. & Nolan, D. (2014). Study of laser cladding of stellite 6 on nickel superalloy substrate with two different energy inputs. Advanced Materials Research, 896 600-604.

Scopus Eid


  • 2-s2.0-84896305969

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3293

Number Of Pages


  • 4

Start Page


  • 600

End Page


  • 604

Volume


  • 896

Place Of Publication


  • Switzerland

Abstract


  • Stellite 6 was deposited by laser cladding on a nickel superalloy substrate (NIS) with energy inputs of 1 kW (NIS 1) and 1.8 kW (NIS 1.8). The chemical compositions and microstructures of these coatings were characterized by atomic absorption spectroscopy, optical microscopy and scanning electron microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was examined using a pin-on-plate (reciprocating) wear testing machine. The results showed less cracking and pore development for Stellite 6 coatings applied to the nickel superalloy substrate with the lower heat input (NIS 1). Further, the Stellite coating for NIS 1 was significantly harder than that obtained for NIS 1.8. The wear test results showed that the weight loss for NIS 1 was much lower than for NIS 1.8. It is concluded that the lower hardness of the coating for NIS 1.8, together with the softer underlying substrate structure, markedly reduced the wear resistance of the Stellite 6 coating.

Publication Date


  • 2014

Citation


  • Kusmoko, A., Dunne, D., Li, H. & Nolan, D. (2014). Study of laser cladding of stellite 6 on nickel superalloy substrate with two different energy inputs. Advanced Materials Research, 896 600-604.

Scopus Eid


  • 2-s2.0-84896305969

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3293

Number Of Pages


  • 4

Start Page


  • 600

End Page


  • 604

Volume


  • 896

Place Of Publication


  • Switzerland