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Title: Structural phase states in NiTi near-surface layers modified by electron and ion beams

The paper considers the effects arising on X-ray diffraction patterns taken in different diffraction geometries and how these effects can be interpreted to judge structural states in NiTi near-surface regions after electron and ion beam treatment. It is shown that qualitative and quantitative analysis of phase composition, lattice parameters of main phases, elastic stress states, and their in-depth variation requires X-ray diffraction patterns in both symmetric Bragg–Brentano and asymmetric Lambot–Vassamilleta geometries with variation in X-ray wavelengths and imaging conditions (with and with no β-filter). These techniques of structural phase analysis are more efficient when the thickness of modified NiTi surface layers is 1–10 μm (after electron beam treatment) and requires special imaging conditions when the thickness of modified NiTi surface layers is no greater than 1 μm (after ion beam treatment)
Authors:
;  [1] ; ; ;  [2] ;  [3]
  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. Angioline Interventional Device, Novosibirsk, 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
22390428
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; ASYMMETRY; BRAGG REFLECTION; CRYSTAL LATTICES; ELECTRON BEAMS; ELECTRONS; GEOMETRY; LATTICE PARAMETERS; LAYERS; NICKEL ALLOYS; PHASE STUDIES; STRESSES; SURFACES; THICKNESS; TITANIUM ALLOYS; VARIATIONS; X-RAY DIFFRACTION