Austenite stability in Fe-Mn-Si-based shape memory alloys

Stanford, N., Dunne, D.P. and Monaghan, B.J. 2007, Austenite stability in Fe-Mn-Si-based shape memory alloys, Journal of alloys and compounds, vol. 430, no. 1-2, pp. 107-115.


Title Austenite stability in Fe-Mn-Si-based shape memory alloys
Author(s) Stanford, N.
Dunne, D.P.
Monaghan, B.J.
Journal name Journal of alloys and compounds
Volume number 430
Issue number 1-2
Start page 107
End page 115
Publisher Elsevier BV
Place of publication Amsterdam, Netherlands
Publication date 2007-03-14
ISSN 0925-8388
1873-4669
Keyword(s) Shape memory
Phase transformation
Martensite
Austenite
Intermetallic
Summary The stability of austenite in a number of Fe–Mn–Si-based shape memory alloys has been investigated. It was found that a grain boundary precipitate of BCC structure is formed over a wide range of alloy compositions and heat treatment temperatures. This grain boundary phase has been identified as the chi (χ) phase. Although up to 3 vol.% of the grain boundary precipitate was generated by isothermal aging in the range 500–800 °C, it was found not to markedly affect the mechanical properties or the shape memory effect. Nano-indentation indicated that the hardness and strength of the parent and precipitate phase are very similar, as are their compositions.
Language eng
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, Published by Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025894

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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