Shape Memory Properties of Ultrafine-Grained Austenitic Stainless Steel

Karine Andrea Käfer; Heide Heloise Bernardi; Leonardo Kenji Fudo Naito; Nelson B. Lima; Jorge Otubo

doi:10.4028/www.scientific.net/MSF.738-739.496

Paper Titles

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Formation of Nanostructure Surface Layers from Materials with Shape Memory Effect TiNiCu in Conditions
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HomeMaterials Science ForumMaterials Science Forum Vols. 738-739Shape Memory Properties of Ultrafine-Grained...

Shape Memory Properties of Ultrafine-Grained Austenitic Stainless Steel

Abstract:

In this work the effect of grain refinement on the shape memory properties of a Fe-Mn-Si-Cr-Ni-Co-Ti alloy was evaluated using compression tests. In order to refine the microstructure, the samples were heavily deformed by equal channel angular extrusion (ECAE) and then annealed at different temperatures ranging from 450°C to 1050°C. These treatments resulted in the formation of intermetallic precipitates and strengthening of austenitic matrix. The results of compression testes show that the higher degrees of shape recovery (56 % for 4% strain) were achieved by the samples with smaller grain size (12 µm).

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Periodical:

Materials Science Forum (Volumes 738-739)

Pages:

496-500

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.738-739.496

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Online since:

January 2013

Authors:

Karine Andrea Käfer, Heide Heloise Bernardi, Leonardo Kenji Fudo Naito, Nelson B. Lima, Jorge Otubo

Keywords:

Compression Test, ECAE, Grain Size, Shape Memory Alloy (SMA)

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References

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