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

doi:10.1016/j.jallcom.2018.12.298

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

Materials Design Division

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	674-679
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	783
DOIs	https://doi.org/10.1016/j.jallcom.2018.12.298
Publication status	Published - 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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title = "Microstructure development and high tensile properties of He/H2 milled oxide dispersion strengthened copper",

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).",

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T1 - Microstructure development and high tensile properties of He/H2 milled oxide dispersion strengthened copper

AU - Aghamiri, S. M.S.

AU - Oono, N.

AU - Ukai, S.

AU - Kasada, R.

AU - Noto, H.

AU - Hishinuma, Y.

AU - Muroga, T.

PY - 2019/4/30

Y1 - 2019/4/30

N2 - 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).

AB - 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).

KW - Milled Cu-ODS

KW - Strengthening mechanisms

KW - Tensile properties

KW - Texture

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