Reducing shrinkage defects at hot spots in aluminium squeeze castings

L. Xiao, Koichi Anzai, E. Niyama, K. Nakahara

Research output: Contribution to journalArticlepeer-review


Shrinkage at hot-spots contained within an aluminum alloy squeeze casting has been reduced below the given specification by optimizing the feeding path design and using a squeezing pressure above a critical level. The optimization was assisted by a semi-empirical equation, correlating shrinkage with modulus (V/A), critical solid fraction (fsc) and the solidification shrinkage (β). A satisfactory agreement has been found between the amount of shrinkage predicted by the equation and that found by experiments.

Original languageEnglish
Pages (from-to)197-203
Number of pages7
JournalInternational Journal of Cast Metals Research
Issue number4
Publication statusPublished - 1999 Dec 1


  • Critical solid fraction
  • Feeding path
  • Hot-spots
  • Modulus
  • Shrinkage
  • Squeeze casting

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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