An EBSD Investigation of Ultrafine-Grain Titanium for Biomedical Applications

Abstract

High-resolution electron backscatter diffraction (EBSD) was used to examine the grain structure in long rods of ultrafine-grain (UFG)commercial-purity titanium produced for medical implants. The UFG material was obtained by equal channel angular pressing (ECAP) using a Conform scheme followed by rod drawing. The microstructure was found to be bimodal consisting of relatively coarse elongated grains containing well-developed substructure and ultrafine grains. The mean grain size was 0.3 m, and the fraction of high-angle boundaries was 45 . The material had a strong <101 0>-fiber texture. An analysis of the microstructureproperties relationship showed that the increase in material strength developed during severe plastic deformation resulted from grain refinement and substructure evolution in comparable measure.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 21, 2015
Accession Number
AD1028947

Entities

People

  • E. Zemtsova
  • G. S. Dyakonov
  • I. P. Semenova
  • R. Z. Valiev
  • S. L. Semiatin
  • S. Mironov

Organizations

  • Ufa State Aviation Technical University

Tags

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Boundaries
  • Crystal Structure
  • Diffraction
  • Electron Microscopy
  • Grain Boundaries
  • Grain Size
  • High Angles
  • High Resolution
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanics
  • Phase Transformations
  • Plastic Deformation
  • Titanium

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.

Technology Areas

  • Biotechnology
  • Microelectronics