Evolution of Solidification Structures in Fe-Mn-Si-Cr Shape Memory Alloy in Centrifugal Casting

• Ito Kenichiro

  Honda R&D Co. Ltd.

• Sahara Ryoji

  Institute for Materials Research, Tohoku University

• Farjami Susan

  Department of Materials Science, Graduate School of Engineering, Tohoku University

• Maruyama Tadakatsu

  Awaji Sangyo KK

• Kubo Hiroshi

  Kanto Polytechnic University

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.<BR>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 rate of the casting.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 47 (6), 1584-1594, 2006

  The Japan Institute of Metals and Materials

Keywords

• simulation
• centrifugal casting
• shape memory alloys (SMA)
• cellular automaton
• finite volume method

Details

• CRID: 1390001204250782592
• NII Article ID: 130004453174
• NII Article ID: 10018160700
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.47.1584
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 7951140
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7951140
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/47/6/47_6_1584/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed