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, doi: 10.1016/j.jallcom.2006.04.054.

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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
Keyword(s) Shape memory
Phase transformation
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
DOI 10.1016/j.jallcom.2006.04.054
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.
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Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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