Lower Cost Automotive Piston from 2124/SiC/25p Metal-Matrix Composite

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.

• Record URL:
  https://doi.org/10.4271/2017-01-1048
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19463936
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Falsafi, Javad
  • Rosochowska, Malgorzata
  • Jadhav, Prashant
  • Tricker, David
• Conference:
  • WCX™ 17: SAE World Congress Experience
  • Location: Detroit Michigan, United States
  • Date: 2017-4-4 to 2017-4-6
• Publication Date: 2017-3-28

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1984-1992
• Serial:
  • SAE International Journal of Engines
  • Volume: 10
  • Issue Number: 4
  • Publisher: SAE International
  • ISSN: 1946-3936
  • EISSN: 1946-3944
  • Serial URL: http://saeeng.saejournals.org/

Subject/Index Terms

• TRT Terms: Aluminum alloys; Costs; Finite element method; Forging; Mechanical tests; Pistons (Engines); Powder metallurgy; Processing (Materials); Silicon carbide; Spark ignition engines
• Subject Areas: Highways; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 01642549
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2017-01-1048
• Files: TRIS, SAE
• Created Date: Mar 29 2017 4:46PM