Journal of Engineering Science and Technology Review (Jul 2014)

Modeling Cavitation in ICE Pistons Made with Isothermal Forging

  • V.V. Astanin,
  • A.A. Shakhovkina,,
  • F.F. Safin,
  • M.O. Melnikov,
  • A.M. Yamileva ,
  • A.T. Bikmeyev

Journal volume & issue
Vol. 7, no. 5
pp. 1 – 4

Abstract

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Possible causes for cavitations in parts made with an Al-Si eutectic alloy AK12D (AlSi12) were explored with mathematical and physical modeling with involved acoustic emission. Pores were formed from micro-cracks, which appear during the early stages of a deformation process, with the help of micro-stresses appearing at phase boundaries (Al/Si interface) due to thermal expansion. At the design stage of isothermal forgings of such products it is recommended to provide a scheme of the deformed shape, which is under uniform compression, to compensate for the inter-phase stresses.

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