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Superelastic memory effect in in-situ NbTi-nanowire-NiTi nanocomposite
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10.1063/1.4764538
/content/aip/journal/apl/101/17/10.1063/1.4764538
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/17/10.1063/1.4764538
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) TEM micrograph of the longitudinal-section of the composite wire (NbTi nanowires marked by “Nb”); Insert of (a) is the corresponding SAED pattern, (b) SEM micrograph of the transverse-section of the composite wire (bright lamellas: the cross sections of NbTi nanowires); Insert of (b) is TEM micrograph of the cross-section of NbTi nanowires, (c) 2-D high-energy x-ray diffraction pattern of the composite wire, the longitudinal L, and transverse T directions of the composite wire are labeled.

Image of FIG. 2.
FIG. 2.

Multiple-step cyclic stress-strain curves of the NbTi-nanowire-NiTi composite wire.

Image of FIG. 3.
FIG. 3.

(a) Section of diffraction patterns for the specimen at. 4% strain on the first loading, (b) and (c) the plots of the d-spacings for NbTi (110) and B2-NiTi (110) perpendicular to the wire axial direction versus the position in the entire specimen at three strain states in the first cycle.

Image of FIG. 4.
FIG. 4.

The schematic representation of the superelastic memory mechanism in the composite. (a) Undeformed specimen, (b) The 1st load to 4% strain (The arrows represent the extended directions of martensitic transformation regions), (c) After the 1st unload (The arrows represent the interactional stresses between nanowires and matrix), (d) The 2nd load to 4% strain, and (e) The 2nd load to above 4% strain.

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/content/aip/journal/apl/101/17/10.1063/1.4764538
2012-10-26
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Superelastic memory effect in in-situ NbTi-nanowire-NiTi nanocomposite
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/17/10.1063/1.4764538
10.1063/1.4764538
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