Evolution of solidification structures in Fe-Mn-Si-Cr shape memory alloy in centrifugal casting

Kenichiro Ito, Ryoji Sahara, Susan Farjami, Tadakatsu Maruyama, Hiroshi Kubo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In aiming at obtaining thin columnar structures in the centrifugal casting of Fe-28Mn-6Si-5Cr (mass%) shape memory alloy (SMA), evolution of solidified macroscopic structures is investigated by solidification experiments and simulation using a coupled finite volume-cellular automaton (FV-CA) model. In the temperature gradient-crystal growth rate (G-V) diagram of solidification, the columnar to equi-axed transition (CET) line that indicates the boundary of two different structural regions is identified from the simulation calculation. The macroscopic structure of joining pipes of Fe-28Mn-6Si-5Cr SMA produced by centrifugal casting is elucidated to reside in a deep region of columnar structure in the G-V diagram. It is concluded that finer columnar structure could be obtained by increasing the rotation speed of centrifugal casting mould and by Increasing the cooling race of the casting.

Original languageEnglish
Pages (from-to)1584-1594
Number of pages11
JournalMaterials Transactions
Volume47
Issue number6
DOIs
Publication statusPublished - 2006 Jun 1

Keywords

  • Cellular automaton
  • Centrifugal casting
  • Finite volume method
  • Shape memory alloys (SMA)
  • Simulation

ASJC Scopus subject areas

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

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