Magnetic shape memory - Polymer hybrids

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Research units

Abstract

Martensitic Ni-Mn-Ga based alloys are known for the Magnetic Shape Memory (MSM) effect, which upon application of an external magnetic field can generate a strain up to 12 % depending on the microstructure of the martensite. The MSM effect occurs by rearrangement of the martensite variants, which is most advantageous in single crystals. Single crystals are, however, rather tedious to produce and there has been attempts to achieve MSM effect in polycrystals. However, in polycrystals the magnetic field induced shape change remains low as compared to single crystals. As an alternative to the former, hybrid MSM materials offer several advantages. When compared to single crystals, hybrids have extended freedom of shaping, lower raw material price, relatively large MSM strain and easier manufacturability. Embedding MSM particles into a suitable polymer matrix results in actuation function or good vibration damping performance. In the present study we report on the mechanical, structural and magnetic properties of MSM polymer hybrids, which are prepared by mixing gas-atomized Ni-Mn-Ga MSM powder into epoxy matrix and aligning the magnetic particles in a magnetic field.

Details

Original languageEnglish
Title of host publicationTHERMEC 2016
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Processing and Manufacturing of Advanced Materials - Graz, Austria
Duration: 29 May 20163 Jun 2016
Conference number: 9

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)02555476

Conference

ConferenceInternational Conference on Processing and Manufacturing of Advanced Materials
Abbreviated titleTHERMEC
CountryAustria
CityGraz
Period29/05/201603/06/2016

    Research areas

  • Damping, Hybrids, Magnetic shape memory, Polymer

ID: 9769694