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Journal of Materials Science

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17.07.2015 | 50th Anniversary

Stress-assisted removal of conjugation boundaries in non-modulated Ni–Mn–Ga by coordinated secondary twinning

Erschienen in: Journal of Materials Science | Ausgabe 1/2016

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Abstract

Observations are presented, obtained by in situ straining and conventional TEM, of a transformation mechanism by coordinated secondary twinning predicted by Mullner and King. The material studied is the martensitic phase of a non-modulated Ni–Mn–Ga alloy, which exhibits a microstructure comprising domains of lamellar matrix/twin composites. Straining these specimens induced lamellar domains to transform into their conjugate counterparts. In this process, secondary twinning generates a change of misorientation between the matrix and twin lamellae of the initial domain by nearly 23°. The orientation evolves over a region behind the transformation front about 100 nm in extent.

Vorheriger Artikel Quantitative correlation of interfacial contamination and antiphase domain boundary density in GaAs on Si(100)

Nächster Artikel The mechanism of grain boundary motion in SrTiO3

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Titel: Stress-assisted removal of conjugation boundaries in non-modulated Ni–Mn–Ga by coordinated secondary twinning
Publikationsdatum: 17.07.2015
Erschienen in: Journal of Materials Science / Ausgabe 1/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-015-9236-1

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