Lower cost automotive piston from 2124/SiC/25p metal-matrix composite

J. Falsafi, M. Rosochowska, P. Jadhav, D. Tricker

Research output: Contribution to conferenceProceeding

6 Citations (Scopus)
53 Downloads (Pure)

Abstract

Engineered materials have made a breakthrough in a quest for materials with a combination of custom-made properties to suit particular applications. One of such materials is 2124/SiC/25p, a high-quality aerospace grade aluminium alloy reinforced with ultrafine particles of silicon carbide, manufactured by a powder metallurgy route. This aluminium matrix composite offers a combination of greater fatigue strength at elevated temperatures, lower thermal expansion and greater wear resistance in comparison with conventionally used piston materials. The microscale particulate reinforcement also offers good formability and machinability. Despite the benefits, the higher manufacturing cost often limits their usage in high-volume industries such as automotive where such materials could significantly improve the engine performance. This paper presents mechanical and forging data for a lower cost processing route for metal matrix composites. Finite element modelling and analysis were used to examine forging of an automotive piston and die wear. This showed that selection of the forging route is important to maximise die life. Mechanical testing of the forged material showed a minimal reduction in fatigue properties at the piston operating temperature.
Original languageEnglish
Number of pages9
Publication statusPublished - 28 Mar 2017
EventSAE World Congress Experience - Cobo Center, Detroit, United States
Duration: 4 Apr 20176 Apr 2017
https://www.sae.org/congress/

Conference

ConferenceSAE World Congress Experience
Abbreviated titleWCX17
CountryUnited States
CityDetroit
Period4/04/176/04/17
Internet address

Keywords

  • metal composite
  • automotive piston
  • forging of pistons
  • FE simulation
  • aluminium alloy
  • silicon carbide
  • fatigue strength
  • manufacturing cost
  • piston operating temperature

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