Thermo-mechanical processing and the shape memory effect in an Fe–Mn–Si-based shape memory alloy

Stanford, N. and Dunne, D.P. 2006, Thermo-mechanical processing and the shape memory effect in an Fe–Mn–Si-based shape memory alloy, Materials science and engineering A : structural materials : properties, microstructures and processing, vol. 422, no. 1-2, pp. 352-359.


Title Thermo-mechanical processing and the shape memory effect in an Fe–Mn–Si-based shape memory alloy
Author(s) Stanford, N.
Dunne, D.P.
Journal name Materials science and engineering A : structural materials : properties, microstructures and processing
Volume number 422
Issue number 1-2
Start page 352
End page 359
Publisher Elsevier S.A.
Place of publication Lausanne, Switzerland
Publication date 2006-04
ISSN 0921-5093
1873-4936
Keyword(s) Shape memory
Training
Ferrous alloys
Cold rolling
Annealing
Summary The effect of cold rolling and annealing on the shape memory effect (SME) in an Fe–Mn–Si-based alloy has been studied. It has been found
that the SME in these alloys can be significantly increased by the appropriate thermo-mechanical processing (TMP). The optimum conditions
were found to be 15% cold rolling followed by annealing at 800 ◦C for 15 min. This produced a total strain recovery of 4.5%. TEM showed that
this processing schedule produces a microstructure of evenly spaced, and well defined stacking faults throughout the parent phase. It is shown for
the first time that samples processed in this way produce a larger fraction of martensite compared to samples in the as-austenitized condition. It
is concluded that the stacking faults induced by TMP act as nucleation sites for martensite formation during deformation. The SME is improved
primarily as a result of the increased amount of martensite that is formed in this condition.
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, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30025890

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