Nebojša Romčević (Author), M. Gilić (Author), Ivan Anžel (Author), Rebeka Rudolf (Author), Miodrag Mitrić (Author), Maja J. Romčević (Author), B. Hadžić (Author), D. Joksimović (Author), Milica Petrović Damjanović (Author), Matija Kos (Author)

Abstract

Our work deals with the problem of producing a complex metal-ceramic composite using the processes of internal oxidation (IO) and severe plastic deformation. For this purpose, Cu-Al alloy with 0.4wt.% of Al was used. IO of sample serves in the first step of the processing as a means for attaining a fine dispersion of nanosized oxide particles in the metal matrix. Production technology continues with repeated application of severe plastic deformation (SPD) of the resulting metalmatrix composite to produce the bulk nanoscaled structural material. SPD was carried out with equal channel angular pressing (ECAP), which allowed that the material could be subjected to an intense plastic strain through simple shear. Microstructural characteristics of one phase and multiphase material was studied on internally oxidized Cu with 0.4wt.% of Al sample composed of one phase copper-aluminum solid solution in the core and fine dispersed oxide particles in the same matrix in the mantle region. In this manner AFM, X-ray diffraction and Raman spectroscopy were used. Local structures in plastically deformed samples reflect presence of Cu, CuO, Cu2O, Cu4O3 or Al2O3 structural characteristics, depending on type of sample.

Keywords

kovine;oksidi;mikroskopija na atomsko silo;Raman spektroskopija;mikrostrukture;metals;oxides;atomic force microscopy;Raman spectroscopy;microstructure;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 669
COBISS: 17748758 Link will open in a new window
ISSN: 1450-5339
Views: 1015
Downloads: 122
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Other data

Secondary language: Slovenian
Secondary keywords: kovine;oksidi;mikroskopija na atomsko silo;Raman spektroskopija;mikrostrukture;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: str. 61-68
Volume: ǂVol. ǂ50 B
Issue: ǂno. ǂ1
Chronology: 2014
DOI: 10.2298/JMMB140121007R
ID: 10852807