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Application of Complete Gurson Model for prediction of ductile fracture in welded steel joints
(Trans Tech Publications Ltd, Durnten-Zurich, 2009)
Ductile fracture process includes three stages: void nucleation, their growth and coalescence. The voids nucleate due to the fracture or separation of non-metallic inclusions and secondary-phase particles from the material ...
Influence of SA procedure welding parameters on mechanical properties spiral welded steel tubes API X60 / Uticaj parametara EPP postupka zavarivanja na mehaničke osobine spiralno zavarenih cevi od čelika API X60
(DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd, 2009)
The selection of steel, the dimensions and methods of seam welded steel tubes fabrication are closely connected to the function of tube as a whole structure in specific working conditions, for a calculated service life. ...
Mechanochemical synthesis and electrical conductivity of nanocrystalline δ-Bi2O3 stabilized by HfO2 and ZrO2
(Belgrade : Serbian Chemical Society, 2009)
A powder mixture of α-Bi2O3 and HfO2, in the molar ratio 2:3, was mechanochemically treated in a planetary ball mill under air, using zirconium oxide vials and balls as the milling medium. After 50 h of milling, the ...
Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions
(Walter de Gruyter & Co, Berlin, 2009)
The conversion of cellulose to dialdehyde cellulose (DAC) by treatment with aqueous periodate was studied by the CCOA method, which is a combination of gel permeation chromatography and carbonyl-selective fluorescence ...
Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound
(Elsevier, 2009)
Concurrent milling of Bi4Ti3O12 was carried out in a planetary ball mill with hardened-steel 13 or 6 mm diameter balls with a goal to investigate how the system responds to the constrains imposed by milling. Milling intensity ...
Mechanochemistry of titanium oxides
(Belgrade : Association of the Chemical Engineers of Serbia, 2009)
Mechanochemistry represents an alternative route in synthesis of nanomaterials. Mechanochemical routes are attractive because of their simplicity, flexibility, and ability to prepare materials by solid state reactions at ...
The Influence of Powder Particle Size on Properties of Cu-Al2O3 Composites
(International Institute for the Science of Sintering (IISS), 2009)
Inert gas atomized prealloyed copper powder containing 2 wt.% Al (average particle size approximate to 30 mu m) and a mixture consisting of copper (average particle sizes approximate to 15 mu m and 30 mu m) and 4 wt.% of ...
Reinvestigation of Sr2 [Cu(OH)6]
(International Union of Crystallography, 2009)
During an investigation of the SrO-CuO-P2O5-H 2O system, single crystals of distrontium hexa-hydroxido-cuprate(II), Sr2 [Cu(OH) 6], were obtained by the hydro-thermal method. The blue prismatic crystals of Sr2 [Cu(OH) 6] ...
Stability of Metal-Oxide Varistor Characteristics in Exploitation Conditions
(Acta Physica Polonica A, 2009)
Wide-spread use of metal-oxide varistors for non-linearity over-voltage protection results in a variety of possible working conditions. It is therefore essential to have a thorough insight into their reliability in various ...
The recycling of high magnesium aluminum alloys estimation of the most reliable procedure
(Savez inženjera metalurgije Srbije, Beograd, 2009)
Aluminum is one of the most recyclable materials. Namely, the properties of aluminum are not affected by the recycling and reuse, thus enable that high value of the metal is maintained after reprocessing. The re-smelting ...