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Title: Structure of the near-surface layer of NiTi on the meso- and microscale levels after ion-beam surface treatment

Using the EBSD, SEM and TEM methods, the structure of surface layer of polycrystalline NiTi alloy samples was examined after the modification of material surface by the pulsed action of mean-energy silicon ion beam. It was found that the ion beam treatment would cause grain fragmentation of the near-surface layer to a depth 5÷50 μm; a higher extent of fragmentation was observed in grains whose close-packed planes were oriented approximately in the same direction as the ion beam was. The effect of high-intensity ion beam treatment on the anisotropic behavior of polycrystalline NiTi alloy and the mechanisms involved were also examined.
Authors:
;  [1] ; ;  [2] ;  [3] ;  [4]
  1. Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055, Russia and National Research Tomsk State University, Tomsk, 634050 (Russian Federation)
  2. Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 (Russian Federation)
  3. Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055, Russia and National Research Tomsk Polytechnic University, Tomsk, 634050 (Russian Federation)
  4. National Research Tomsk Polytechnic University, Tomsk, 634050 (Russian Federation)
Publication Date:
OSTI Identifier:
22390429
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1623; Journal Issue: 1; Conference: International Conference on Physical Mesomechanics of Multilevel Systems 2014, Tomsk (Russian Federation), 3-5 Sep 2014; 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; ANISOTROPY; APPROXIMATIONS; BACKSCATTERING; ELECTRON DIFFRACTION; FRAGMENTATION; ION BEAMS; LAYERS; NICKEL ALLOYS; POLYCRYSTALS; SCANNING ELECTRON MICROSCOPY; SILICON IONS; SURFACE TREATMENTS; SURFACES; TITANIUM ALLOYS; TRANSMISSION ELECTRON MICROSCOPY