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Nanostructured Nb reinforced NiTi shape memory alloy composite with high strength and narrow hysteresis
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10.1063/1.4809954
/content/aip/journal/apl/102/23/10.1063/1.4809954
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/23/10.1063/1.4809954

Figures

Image of FIG. 1.
FIG. 1.

(a) Scanning electron microscopy (SEM) image of the Nb-NiTi eutectic alloy ingot (bright regions: fine Nb lamellae; dark regions: NiTi matrix). (b) Transmission electron microscopy (TEM) image of a longitudinal section of the nanostructured Nb reinforced NiTi SMA composite wire. (c) SEM image of a cross section of the composite wire (bright regions: cross sections of nanostructured Nb; dark regions: NiTi matrix). (d) SAED pattern from a longitudinal section of the composite wire.

Image of FIG. 2.
FIG. 2.

The tensile cyclic stress-strain curves of the nanostructured Nb reinforced NiTi SMA composite wire (strain: 4% and 5%); the tensile cyclic stress-strain curve of a commercial superelastic NiTi SMA wire.

Image of FIG. 3.
FIG. 3.

(a) Evolution of the -spacing strain for B2-NiTi (110) and Nb (110) planes perpendicular to the loading direction during the tensile loading of the nanostructured Nb reinforced NiTi SMA composite wire. Insert is tensile stress-strain curve of the composite wire. (b) Evolution of a section of HE-XRD patterns obtained from the composite during tensile loading. (c) Evolution of a section of HE-XRD patterns obtained from the composite in the tensile strain cycle of 5%. (d) Evolution of the -spacing strain for B2-NiTi (110) and Nb (110) planes perpendicular to the loading direction in the tensile strain cycle of 5%.

Tables

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Table I.

Comparisons of recoverable strain, yield stress, and mechanical energy storage density and storage efficiency between various smart materials and the nanostructured Nb reinforced NiTi SMA composite.

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/content/aip/journal/apl/102/23/10.1063/1.4809954
2013-06-11
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nanostructured Nb reinforced NiTi shape memory alloy composite with high strength and narrow hysteresis
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/23/10.1063/1.4809954
10.1063/1.4809954
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