Controlled porosity alloys through solidification processing: a modelling study

Y. Zheng, S. Sridhar, K. C. Russell

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

A new directional solidification method called GASAR has been developed in Ukraine for producing solids with controlled porosity. The concentration, distribution, size and geometry of the bubbles are manipulated by varying different process variables. The present work investigates the thermodynamics and kinetics of metal-rich alloys, using the prototypical Cu-H system. The eutectic is highly asymmetric, which leads to an extremely small range of compositions and solidification temperatures where stable eutectic growth is possible. An earlier theoretical study has shown that bubble nucleation occurs only in highly pointed pits and sharp cracks in ceramic particles present in the melt.

Original languageEnglish (US)
Pages (from-to)365-370
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume371
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 28 1994Nov 30 1994

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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