Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 12, No. 43 (2018)

Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases

Author and affiliation details
  • Marialaura Tocci Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123, Brescia, Italy ORCID iD0000-0002-7515-0615
  • Annalisa Pola Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123, Brescia, Italy ORCID iD0000-0002-0722-6518
  • Lorenzo Montesano Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123, Brescia, Italy ORCID iD0000-0001-5465-6265
  • G. Marina La Vecchia Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, 25123, Brescia, Italy ORCID iD0000-0001-5919-0396
DOI
10.3221/IGF-ESIS.43.17
Pages
Pages 218-230
Published
Published inVol. 12, No. 43 (2018)Go to the issue

Abstract

In the present paper, the influence of eutectic and intermetallic phases on cavitation resistance of Al-Si alloys was studied. In fact, Al-Si alloys are commonly used for the production of components, such as cylinders, pistons, pumps, valves and combustion chambers, which in service may incur in cavitation phenomenon. Samples of AlSi3, AlSi9 and AlSi9CuFe were characterized from the microstructural point of view. Hardness measurements were also performed. Subsequently, cavitation tests were carried out according to ASTM G32 standard and the erosion mechanism was examined by scanning electron microscope. It was found the both eutectic and intermetallic phases enhance cavitation resistance, expressed in terms of mass loss. Particularly, intermetallic particles with complex morphologies provide a positive contribution, exceeding that of other microstructural features, as grain size. The effect of T6 heat treatment was also evaluated. It was confirmed that the precipitation of fine strengthening particles in the Al matrix successfully hinders the movement of dislocations, resulting in a longer incubation stage and a lower mass loss for heat-treated samples in comparison with as-cast ones. Finally, the relationship between cavitation resistance and material hardness was investigated.

Keywords

How to cite

APA

Tocci, M., Pola, A., Montesano, L., & Marina La Vecchia, G. (2017). Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases. Fracture and Structural Integrity, 12(43), Pages 218–230. https://doi.org/10.3221/IGF-ESIS.43.17

IEEE

M. Tocci, A. Pola, L. Montesano, and G. Marina La Vecchia, “Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases,” Fracture and Structural Integrity, vol. 12, no. 43, pp. Pages 218–230, 2017, doi: 10.3221/IGF-ESIS.43.17.

MLA

Tocci, Marialaura, et al. “Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases.” Fracture and Structural Integrity, vol. 12, no. 43, 2017, pp. Pages 218–230. https://doi.org/10.3221/IGF-ESIS.43.17.

Chicago

Tocci, Marialaura, Annalisa Pola, Lorenzo Montesano, and G. Marina La Vecchia. 2017. “Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases.” Fracture and Structural Integrity 12 (43): Pages 218–230. https://doi.org/10.3221/IGF-ESIS.43.17.

Harvard

Tocci, M., Pola, A., Montesano, L. and Marina La Vecchia, G. (2017) ‘Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases’, Fracture and Structural Integrity, 12(43), pp. Pages 218–230. doi: 10.3221/IGF-ESIS.43.17.

Vancouver

Tocci M, Pola A, Montesano L, Marina La Vecchia G. Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases. Fracture and Structural Integrity. 2017;12(43):Pages 218-230. doi:10.3221/IGF-ESIS.43.17

BibTeX

@article{tocci2017, author = {Tocci, Marialaura and Pola, Annalisa and Montesano, Lorenzo and Marina La Vecchia, G.}, title = {Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases}, journal = {Fracture and Structural Integrity}, year = {2017}, volume = {12}, number = {43}, pages = {Pages 218--230}, doi = {10.3221/IGF-ESIS.43.17}, url = {https://doi.org/10.3221/IGF-ESIS.43.17}, issn = {1971-8993} }

RIS

TY - JOUR AU - Tocci, Marialaura AU - Pola, Annalisa AU - Montesano, Lorenzo AU - Marina La Vecchia, G. TI - Evaluation of cavitation erosion resistance of Al-Si casting alloys: effect of eutectic and intermetallic phases JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2017 DA - 2017/12/29 VL - 12 IS - 43 SP - Pages 218 EP - 230 DO - 10.3221/IGF-ESIS.43.17 UR - https://doi.org/10.3221/IGF-ESIS.43.17 SN - 1971-8993 ER -

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