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DISLOCATION MECHANISM OF TWINNING IN Ni–Mn–Ga

Institute of Physics, ASCR v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

Aalto University School of Chemical Technology, Department of Materials Science and Engineering, POB 16200, FI-00076 Aalto, Finland

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J. GEMPERLOVÁ

Institute of Physics, ASCR v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

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A. GEMPERLE

Institute of Physics, ASCR v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

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, and

S.-P. HANNULA

Aalto University School of Chemical Technology, Department of Materials Science and Engineering, POB 16200, FI-00076 Aalto, Finland

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https://doi.org/10.1142/S1793604712500063Cited by:19 (Source: Crossref)

Abstract

Tensile tests were performed in situ in a transmission electron microscope to investigate the twinning mechanism in non-modulated Ni–Mn–Ga martensite. The reorientation of the twin variants occurs via twinning dislocations. Their generation and movement were followed; the glide plane and Burgers vector were verified. Individual twinning dislocations were visualized.

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