A modified squeeze infiltration process to synthesize nickel coated carbon fiber reinforced Al-2014 composite

Pradeep K. Rohatgi, Vindhya Tiwari, Nikhil Gupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Ni coated carbon fibers were infiltrated with Al-2014 melt using conventional and a modified squeeze cast process. The process modification involved extending the fibers out of the mold and being air cooled during solidification. The process modification was aimed at reducing the damage to the Ni-coating during the infiltration process. The mismatch between the coefficient of thermal expansion of Ni-coating and carbon fiber was found to be the primary reason leading to the damage, which was minimized by adjusting the cooling rates. This process resulted in significant improvement in retention of the Ni-coating compared to the unmodified process. The contents of both nickel and copper in the matrix decreased with increase in the distance from fiber surface suggesting that solidification started in the interfiber region. The Vickers hardness values for the unreinforced portion of the sample, the matrix regions within the fiber tows and at the fiber matrix interface were found to be 55, 72 and 87 respectively.

Original languageEnglish (US)
Title of host publicationSolidification Processing of Metal Matrix Composites - Rohatgi Honorary Symposium
Number of pages11
StatePublished - 2006
Event2006 TMS Annual Meeting - San Antonio, TX, United States
Duration: Mar 12 2006Mar 16 2006

Publication series

NameTMS Annual Meeting


Other2006 TMS Annual Meeting
Country/TerritoryUnited States
CitySan Antonio, TX


  • Aluminum alloy
  • Metal Matrix Composite
  • Microstructure
  • Pressure Infiltration

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys


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