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A New class of metal nanocomposites with superior mechanical properties: Unusual thermal expansion in NbTi-Nanowires / NiTi-Matrix composite

  • Shijie Hao
  • , Lishan Cui
  • , Shan Wang
  • , Daqiang Jiang
  • , Cun Yu
  • , Dennis E. Brown
  • , Yang Ren

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

An in-situ composite composed of NbTi nanowires, which are well dispersed and aligned in amorphous/nanocrystalline NiTi matrix, exhibits an unusual non-linear thermal expansion behavior during heating from 25 °C to 600 °C. The evolution of the structure of NiTi matrix and the axial thermal expansion property of NbTi nanowires during heating process were studied by in situ synchrotron X-ray diffraction. The collective effects of the intrinsic thermal expansion properties of NiTi matrix and NbTi nanowires, and the coupling between nanowires and matrix during heating were responsible for the unusual thermal expansion behavior. The unusual non-linear thermal expansion property may have potential applications, such as thermal actuator, sensor and fastener materials.
Original languageEnglish
Title of host publicationAdvanced Composites for Aerospace, Marine, and Land Applications - Held During TMS 2014 143rd Annual Meeting and Exhibition
PublisherMinerals, Metals & Materials Society
Pages127-135
ISBN (Print)9781118888919
DOIs
Publication statusPublished - 2014
Externally publishedYes
EventAdvanced Composites for Aerospace, Marine, and Land Applications - TMS 2014 143rd Annual Meeting and Exhibition - San Diego, CA, United States
Duration: 16 Feb 201420 Feb 2014

Publication series

NameTMS Annual Meeting

Conference

ConferenceAdvanced Composites for Aerospace, Marine, and Land Applications - TMS 2014 143rd Annual Meeting and Exhibition
PlaceUnited States
CitySan Diego, CA
Period16/02/1420/02/14

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

  • High-energy X-ray diffraction
  • Metal nanocomposite
  • Thermal expansion

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