Phase-stress partition and stress-induced martensitic transformation in NbTi/NiTi nanocomposite

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • S. J. Hao
  • D. Q. Jiang
  • L. S. Cui
  • Y. D. Wang
  • X. B. Shi
  • Z. H. Nie
  • D. E. Brown

Detail(s)

Original languageEnglish
Article number084103
Journal / PublicationApplied Physics Letters
Volume99
Issue number8
Publication statusPublished - 22 Aug 2011
Externally publishedYes

Abstract

The phase-stress partition and stress-induced martensitic transformation in a NbTi/NiTi nanocomposite were investigated by employing in situ synchrotron x-ray diffraction during tensile cycling. The phase-stress partition behavior in the nanocomposite is significantly different from that previously reported in the metal-matrix composites. Beyond the initial elastic deformation, the stress carried by the NbTi nanowires increased significantly with increasing macroscopic strain, while the stress taken by the NiTi matrix decreased gradually. We also found that the stress-induced martensitic transformation of the NiTi matrix still proceeded even though the matrix carried decreasing stress rather than constant or increasing stress well known in binary NiTi alloys. © 2011 American Institute of Physics.

Bibliographic Note

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Citation Format(s)

Phase-stress partition and stress-induced martensitic transformation in NbTi/NiTi nanocomposite. / Hao, S. J.; Jiang, D. Q.; Cui, L. S.; Wang, Y. D.; Shi, X. B.; Nie, Z. H.; Brown, D. E.; Ren, Y.

In: Applied Physics Letters, Vol. 99, No. 8, 084103, 22.08.2011.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review