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Title: Deformation behavior of Nb nanowires in TiNiCu shape memory alloy matrix

An in-situ nanowire Nb/TiNiCu composite is fabricated based on the concept of strain under-matching between a phase transforming matrix and high strength nanomaterials. The deformation behavior of the Nb nanowire was investigated by means of in-situ synchrotron X-ray diffraction when the TiNiCu matrix underwent different deformation modes. The maximum lattice strain of the Nb nanowires was about 5% when the matrix deformed via martensitic transformation or 1% when deforming plastically by dislocation slip. As a result, the Nb nanowires showed a lattice strain of 3.5% when the matrix deformed in the mixed mode of plastic deformation and martensitic transformation, which means that the occurrence of plastic deformation does not impede load transfer from the matrix to the nanowires.
 [1] ;  [2] ;  [3] ;  [3] ;  [2] ;  [3] ;  [4] ;  [3]
  1. The Univ. of Western Australia (Australia); China Univ. of Petroleum, Beijing (China)
  2. The Univ. of Western Australia (Australia)
  3. China Univ. of Petroleum, Beijing (China)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
AC02-06CH11357; DP140103805; 51231008; 51401240; 11474362; 2012CB619403; 313055
Accepted Manuscript
Journal Name:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
Additional Journal Information:
Journal Volume: 646; Journal Issue: C; Journal ID: ISSN 0921-5093
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY TiNiCu; composite; martensitic transformation; nanowire; shape-memory alloy; synchrotron x-ray diffraction