Surface grain coarsening and surface softening during machining of ultra-fine grained titanium

A. A. Symonova, O. N. Verezub, A. A. Sycheva, N. V. Verezub, V. L. Havin, G. Kaptay

Research output: Article

6 Citations (Scopus)


Experiments are run to show that different machining conditions applied to ultra-fine grained pure titanium lead to different levels of grain coarsening and softening near the machined surface. Under "hard" machining conditions the upper 40 microns of the machined surface are altered with a decreased microhardness. The experimental results are reasonably reproduced by model calculations. Expanding the parameter field of the model calculations, the surface coarsening diagram and the surface softening diagram due to machining are presented, showing the region of technological parameters, under which neither grain coarsening nor softening takes place along the machined surface.

Original languageEnglish
Pages (from-to)449-459
Number of pages11
JournalJournal of Mining and Metallurgy, Section B: Metallurgy
Issue number3
Publication statusPublished - dec. 1 2012


ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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