Effect of Microstructure on Mechanical Properties of BA1055 Bronze Castings

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The article presents research results performed on aluminum bronze CuAl10Fe5Ni5 (BA1055) castings used for marine propellers. Metallographic studies were made on light microscope and a scanning electron microscope to assess quantitatively and qualitatively the alloy microstructure. It has been shown that the shape, size and distribution of the iron-rich к−phase precipitates in bronze microstructure significantly affect its mechanical properties. With an increase in the number of small к−phase precipitates increases the tensile strength of castings, while the presence of large globular precipitates improves ductility. Fragmentation and shape of κ−phase precipitates depends on many factors, particularly on the chemical composition of the alloy, Fe/Ni ratio, cooling rate and casting technology.

[1] Polish Register of Shipping. (2008). Classification Rules. Vol. 7, Part XIII Materials. Gdansk.

[2] Piaseczny L. & Rogowski K. (2006) Modeling of mechanical properties from blade section thickness of the ship propeller sand casting. Conference Marine Transport. University of Catalunia. Barcelona, pp. 515-520.

[3] Sokolov N.N., Lazarenko S.P. & Žuravlev V.I., (1971). Aluminium bronze propellers. Sudostroenie. Leningrad (in Russian).

[4] Olkowski T. (2013). Modelling of the mechanical properties of ship propeller castings made of copper alloy category Cu3. Unpublished doctoral dissertation, Gdansk University of Technology, Poland (in Polish).

[5] Kowarsch A. & Zaczek Z. (1989). Cooper and its alloys in shipbuilding. Publisher Marine, Gdańsk (in Polish).

[6] Prowans S. & Wysiecki M. (1972). The effect of iron on the structure and phase transformations of aluminum bronzes. Foundry Review. 17(4), pp. 379-393 (in Polish).

[7] Berezina P. (1973). Structure and mechanical properties of multi-component aluminum bronzes of the type CuAl10Fe5Ni5. Gisereiforschung, Jg.25, H.3, pp. 125-234.

[8] Berezina P. (1973). Structure and mechanical properties of multi-component aluminum bronzes of the type CuAl10Fe5Ni5. Giesereiforschung, Jg.25, H.4, pp. 1-10.

[9] Crofts W.J., Towsend D.W. & Bates A.P. (1964). Soundness and reproducibility of properties of sand-cast complex aluminium bronzes. The British Foundryman, 57 (2).

[10] Stasiński A. & Grudowska A. (1971). Manganese bronze castings in the application of marine propellers. Foundry Review, 11, pp. 387-389 (in Polish).

[11] Łabanowski J. & Olkowski T. (2009). Effect of chemical composition and microstructure on mechanical properties of BA1055 bronze sand castings. Advances in Materials Science . Versita, Warsaw, 9(19), pp. 23-29.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316

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