Characterisation of nickel–aluminium bronze powders produced by the planar flow casting method

ABSTRACT

CuAl10Ni5Fe4 alloy powders were successfully produced using the planar flow casting method, known as the continuous ribbon production process. Cooling the textured wheel to -5 ºC resulted in a much finer microstructure in comparison to uncooled wheel powders. The microstructure of the powders, in case of the cooled wheel, consisted of β′ martensite, which resides inside the colonies, and proeutectoid α phase at colony boundaries. The martensite start and finish temperatures for uncooled wheel powders were obtained as 221 ºC, and 174 ºC, respectively. The Ms and Mf temperatures for cooled wheel powders were measured as 207 ºC, and 135 ºC, respectively. It is observed that the magnetic properties of the produced powders change with the amount of β′ martensite.

KEYWORDS:

• Nickel–aluminium bronze
• planar flow casting
• rapid solidification
• powder metallurgy

Acknowledgements

This work was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK) (Grand Number. #115M113).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was financially supported by the Scientific and Technological Research Council of Turkey (TUBITAK) [grand Number #115M113].