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Metallography, Microstructure, and Analysis

, Volume 7, Issue 6, pp 755–760 | Cite as

Structure and Atomic Profile of Grain Boundary Triple Junctions in Tungsten

  • E. V. Sadanov
  • I. V. StarchenkoEmail author
  • V. A. Ksenofontov
  • I. M. Mikhailovskij
Technical Article
  • 34 Downloads

Abstract

The line of triple junction of the general type and special non-CSL grain boundaries was investigated by field ion microscope in high-textured tungsten. Using the controlled field evaporation, the spatial profiles of triple junctions were reconstructed. Atomic-scale wandering of the triple junction line was revealed. The lines of triple junctions of both types of grain boundaries are not perfectly smooth on the atomic scale and have a spatially oscillating character. The triple junction lines consist of the set of kinks with different heights. It was shown that every kink is caused by the existence of the microscopic twist stacking fault on triple junction line. The local penetration of some atomic layers of one crystal in another on grain boundaries within triple junctions was revealed.

Keywords

Polycrystal Grain boundaries Triple junctions Field ion microscope Tungsten 

Notes

Acknowledgments

The authors are grateful for funding support from the National Academy of Science of Ukraine (Grant No. 32-08-14/1).

Authors’ Contributions

ES and IM assigned the tasks and planned the investigations. VK and IS fulfilled the FIM study and processed the experimental evidence. All authors analyzed the results and participated in the preparation of the manuscript. All authors read and approved the final manuscript.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature and ASM International 2018

Authors and Affiliations

  1. 1.Department of Condensed Matter, National Science Center “Kharkov Institute of Physics and Technology”National Academy of Sciences of UkraineKharkivUkraine

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