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Title: In situ synchrotron X-ray diffraction study of deformation behavior and load transfer in a Ti{sub 2}Ni-NiTi composite

The deformation behavior and load transfer of a dual-phase composite composed of martensite NiTi embedded in brittle Ti{sub 2}Ni matrices were investigated by using in situ synchrotron x-ray diffraction during compression. The composite exhibits a stage-wise deformation feature and a double-yielding phenomenon, which were caused by the interaction between Ti{sub 2}Ni and NiTi with alternative microscopic deformation mechanism. No load transfer occurs from the soft NiTi dendrites to the hard Ti{sub 2}Ni matrices during the pseudoplastic deformation (detwinning) of NiTi, which is significantly different from that previously reported in bulk metallic glasses matrices composites.
Authors:
; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Materials Science and Engineering, China University of Petroleum-Beijing, Changping, Beijing 102249 (China)
  2. School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009 (Australia)
  3. X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  4. State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22311191
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALLOYS; COMPOSITE MATERIALS; COMPRESSION; DEFORMATION; DENDRITES; INTERACTIONS; MARTENSITE; MATRIX MATERIALS; METALLIC GLASSES; NICKEL COMPOUNDS; SYNCHROTRON RADIATION; TITANIUM COMPOUNDS; X-RAY DIFFRACTION