Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2015
Autor:innen
Pagounis, Emmanouel
Szczerba, Maciej J.
Chulist, Robert
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Acta Materialia. 2015, 89, pp. 32-40. ISSN 1873-2453. eISSN 1359-6454. Available under: doi: 10.1016/j.actamat.2015.02.001
Zusammenfassung

The martensite/austenite two-phase region of a Ni–Mn–Ga single crystal is investigated using different analytical techniques (DSC, SQUID, and XRD) in order to accurately determine the maximum operating temperature for the magnetic shape memory (MSM) effect. It is found that the width ΔTA = Af − As of the two-phase region and the austenite start temperature As are significantly affected by the variant structure of the martensite prior transformation. The austenite finish temperature Af remains on the other hand constant. In the multi-variant martensite the width ΔTA measured as large as 20 K, while in the single-variant the width is <2 K. A huge shift of up to 16 K toward higher values was measured in the As temperature of the single-variant sample, which in turn determines the maximum MSM operating temperature. Magnetic and mechanical properties across the two-phase region were thoroughly investigated. A considerable improvement of the high-temperature MSM properties is demonstrated for the alloy examined in the present work.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Magnetic shape memory, Phase transformation, Structure, Magneto-mechanical properties, Ni–Mn–Ga
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690PAGOUNIS, Emmanouel, Aleksej LAPTEV, Maciej J. SZCZERBA, Robert CHULIST, Markus LAUFENBERG, 2015. Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region. In: Acta Materialia. 2015, 89, pp. 32-40. ISSN 1873-2453. eISSN 1359-6454. Available under: doi: 10.1016/j.actamat.2015.02.001
BibTex
@article{Pagounis2015Struc-31100,
  year={2015},
  doi={10.1016/j.actamat.2015.02.001},
  title={Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region},
  volume={89},
  issn={1873-2453},
  journal={Acta Materialia},
  pages={32--40},
  author={Pagounis, Emmanouel and Laptev, Aleksej and Szczerba, Maciej J. and Chulist, Robert and Laufenberg, Markus}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/31100">
    <dc:creator>Pagounis, Emmanouel</dc:creator>
    <dc:creator>Laufenberg, Markus</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-06-03T06:41:18Z</dc:date>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/31100"/>
    <dcterms:title>Structural behavior and magnetic properties of a Ni–Mn–Ga single crystal across the martensite/austenite two-phase region</dcterms:title>
    <dc:creator>Szczerba, Maciej J.</dc:creator>
    <dc:contributor>Chulist, Robert</dc:contributor>
    <dc:language>eng</dc:language>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-06-03T06:41:18Z</dcterms:available>
    <dc:contributor>Laptev, Aleksej</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:issued>2015</dcterms:issued>
    <dc:contributor>Szczerba, Maciej J.</dc:contributor>
    <dcterms:abstract xml:lang="eng">The martensite/austenite two-phase region of a Ni–Mn–Ga single crystal is investigated using different analytical techniques (DSC, SQUID, and XRD) in order to accurately determine the maximum operating temperature for the magnetic shape memory (MSM) effect. It is found that the width ΔT&lt;sub&gt;A&lt;/sub&gt; = A&lt;sub&gt;f&lt;/sub&gt; − A&lt;sub&gt;s&lt;/sub&gt; of the two-phase region and the austenite start temperature A&lt;sub&gt;s&lt;/sub&gt; are significantly affected by the variant structure of the martensite prior transformation. The austenite finish temperature A&lt;sub&gt;f &lt;/sub&gt;remains on the other hand constant. In the multi-variant martensite the width ΔT&lt;sub&gt;A&lt;/sub&gt; measured as large as 20 K, while in the single-variant the width is &lt;2 K. A huge shift of up to 16 K toward higher values was measured in the A&lt;sub&gt;s&lt;/sub&gt; temperature of the single-variant sample, which in turn determines the maximum MSM operating temperature. Magnetic and mechanical properties across the two-phase region were thoroughly investigated. A considerable improvement of the high-temperature MSM properties is demonstrated for the alloy examined in the present work.</dcterms:abstract>
    <dc:creator>Chulist, Robert</dc:creator>
    <dc:creator>Laptev, Aleksej</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:contributor>Laufenberg, Markus</dc:contributor>
    <dc:contributor>Pagounis, Emmanouel</dc:contributor>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen