Microstructure development and high tensile properties of He/H2 milled oxide dispersion strengthened copper

S. M.S. Aghamiri, N. Oono, S. Ukai, R. Kasada, H. Noto, Y. Hishinuma, T. Muroga

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

This study describes the effect of microstructural development on high tensile properties of a newly developed He/H2 milled oxide dispersion strengthened copper in a large centimeter sized spherical morphology. Electron back scattered diffraction showed development of a strong texture of (110) plane in micron sized (1.2 μm) grains on the surface of milled spheres. A combination of microstructural features of inhomogeneous grain size, nanoscale lenticular/rectangular deformation twins, high dislocation density and fine oxide particles distribution induced a very high ultimate tensile strength (688 MPa)-ductility (8.6% elongation).

Original languageEnglish
Pages (from-to)674-679
Number of pages6
JournalJournal of Alloys and Compounds
Volume783
DOIs
Publication statusPublished - 2019 Apr 30

Keywords

  • Milled Cu-ODS
  • Strengthening mechanisms
  • Tensile properties
  • Texture

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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