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  • The ultrafine-grained microstructure of pure copper processed by equal-channel angular pressing and its temperature-induced changes were evaluated in order to characterize heterogeneous distribution of fine- and larger-sized grains in the microstructure. ECAP was conducted at room temperature with a die that had an internal angle of 90° between the two parts of the channel. The subsequent extrusion passes were performed by route B C up to 8 ECAP passes and tested under constant load. Creep test was performed on the samples processed by 8 ECAP passes in tension at 373 K under an applied stress 260 MPa. The analyses of microstructure were performed by 3 dimensional electron-back scatter diffraction (3D EBSD) technique. The volume characteristics of microstructure and its inhomogeneity were evaluated and the relationships microstructure/creep behaviour of UFG copper was discussed.
  • The ultrafine-grained microstructure of pure copper processed by equal-channel angular pressing and its temperature-induced changes were evaluated in order to characterize heterogeneous distribution of fine- and larger-sized grains in the microstructure. ECAP was conducted at room temperature with a die that had an internal angle of 90° between the two parts of the channel. The subsequent extrusion passes were performed by route B C up to 8 ECAP passes and tested under constant load. Creep test was performed on the samples processed by 8 ECAP passes in tension at 373 K under an applied stress 260 MPa. The analyses of microstructure were performed by 3 dimensional electron-back scatter diffraction (3D EBSD) technique. The volume characteristics of microstructure and its inhomogeneity were evaluated and the relationships microstructure/creep behaviour of UFG copper was discussed. (en)
Title
  • Quantitative Characteristics of Inhomogeneous Microstructure in UFG Copper
  • Quantitative Characteristics of Inhomogeneous Microstructure in UFG Copper (en)
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  • Quantitative Characteristics of Inhomogeneous Microstructure in UFG Copper
  • Quantitative Characteristics of Inhomogeneous Microstructure in UFG Copper (en)
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  • RIV/68407700:21230/14:00222644!RIV15-MSM-21230___
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  • 41088
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  • RIV/68407700:21230/14:00222644
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  • Copper; Nanostructured Materials; Plastic Deformation; Pressing (forming); Tensile Strength (en)
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  • [6A7A186C1C62]
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  • Metz
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  • London
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  • IOP Conf. Series: Materials Science and Engineering
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  • Dvořák, J.
  • Ponížil, P.
  • Šedivý, O.
  • Helisová, Kateřina
  • Král, P.
  • Kvapilová, M.
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issn
  • 1757-8981
number of pages
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  • 10.1088/1757-899X/63/1/012137
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  • IOP Publishing
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  • 21230
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