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 language | English |
|---|---|
| Pages (from-to) | 1584-1594 |
| Number of pages | 11 |
| Journal | Materials Transactions |
| Volume | 47 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2006 Jun |
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