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47
Peculiarity of Producing Ferritic Ductile Iron Castings
, 2003
"... In the present investigation, the effects of charge materials, melting conditions, section size, spheroidizing and inoculation methods on the chemical composition of melt and the matrix microstructure of ductile iron castings have been investigated. Results showed that the increase of temperature an ..."
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In the present investigation, the effects of charge materials, melting conditions, section size, spheroidizing and inoculation methods on the chemical composition of melt and the matrix microstructure of ductile iron castings have been investigated. Results showed that the increase of temperature
The oral cavity can be treated as a peculiar exa...
"... The work presents the results of microscopic tests of two alloys: Co-Cr-Mo and Co-Cr-W-Mo, together with a quantitative local analysis of the chemical composition, with the use of an electron microprobe X-ray analyzer EDS. Corrosion resistance tests were also performed on the alloys, in the artifici ..."
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, in the artificial saliva environment. The microstructure of the examined alloys was of the dendrite type. An eutectic consisting of alloy carbides and a cobalt austenite was observed in the interdendritic spaces. The dendritic matrix was a solid solution of chromium, molybdenum and carbon in cobalt (γ
Peculiarities of Plastic Deformation of SPD AlLi Alloy at 0.5 K
"... The mechanical properties of AlLi solid solution were studied in tensile deformation tests at extremely low temperature of 0.5 K. The purpose of this study was to investigate the flow stress and work hardening rate as well as the development of serrated (jump-like) deformation for the polycrystallin ..."
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for the polycrystalline samples with different microstruc-ture. The samples obtained by severe plastic deformation via hydroextrusion were initially tensed up to a given intermediate deformation, then unloaded, annealed to modify their microstructure, and once again deformed to fracture. The increase of the grain size
Electrical peculiarities in Al/Si/Ge/.../Ge/Si and Al/SiGe/Si structures
"... The current–voltage (I–V) and capacitance–voltage (C–V) behaviour of different Si/Ge multilayers and SiGe single layers prepared on p-type Si substrates by magnetron sputtering and annealing, has been studied in the temperature range of 80–320 K by using Al Schottky contacts as test structures. Alth ..."
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. Although a significant influence of the microstructure of the Si/Ge multilayers and SiGe layers was obtained on the electrical behaviour of the structures, the structures exhibited similar specific features.
STUDY OF POLARIZATION X-RAY BREMSSTRAHLUNG OF FAST ELECTRONS IN MEDIA WITH DIFFERENT MICROSTRUCTURE
"... Theoretical predictions of peculiarity of polarization X-ray bremsstrahlung from fast electrons in dense media with different microstructure are stated. Results of first experimental observation of such bremsstrahlung by 2.4 MeV electrons in an aluminum leaf are presented and discussed. 1 ..."
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Theoretical predictions of peculiarity of polarization X-ray bremsstrahlung from fast electrons in dense media with different microstructure are stated. Results of first experimental observation of such bremsstrahlung by 2.4 MeV electrons in an aluminum leaf are presented and discussed. 1
Diagnostics of Microstructural Conditions of Metastable Austenitic Steels Subjected to Deformation by Magnetic Analysis
"... Abstract. A complex of magnetic characteristics of high-alloy Fe-Mn- and Fe-Mn-Crbased structural steels subjected to elastic-plastic deformation at room temperature under the scheme of uniaxial tension and torsion is investigated. Peculiarities of changes in magnetic properties caused by an accumul ..."
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Abstract. A complex of magnetic characteristics of high-alloy Fe-Mn- and Fe-Mn-Crbased structural steels subjected to elastic-plastic deformation at room temperature under the scheme of uniaxial tension and torsion is investigated. Peculiarities of changes in magnetic properties caused
Do tracheid microstructure and the presence of minute crystals link Nymphaeaceae, Cabombaceae and Hydatellaceae?
"... Original scanning electron microscopy (SEM) observations are presented for stems of Brasenia schreberi and Cabomba caroliniana of Cabombaceae and three species of Trithuria of Hydatellaceae. End walls of stem tracheids of Brasenia have the same peculiar microstructure that we have reported in Barcl ..."
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Original scanning electron microscopy (SEM) observations are presented for stems of Brasenia schreberi and Cabomba caroliniana of Cabombaceae and three species of Trithuria of Hydatellaceae. End walls of stem tracheids of Brasenia have the same peculiar microstructure that we have reported
FRACTURE TOUGHNESS OF PLASTIC-MOLD STEELS: DEPENDENCE UPON HEAT TREATMENT AND MICROSTRUCTURE.
"... The fracture toughness of low-alloy steels significantly depends upon the microstructure, i.e. upon metallographic constituents amounts and distribution and other parameters like carbides distribution, grain size, etc. Almost all the available studies and experimental data concern single constituent ..."
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The fracture toughness of low-alloy steels significantly depends upon the microstructure, i.e. upon metallographic constituents amounts and distribution and other parameters like carbides distribution, grain size, etc. Almost all the available studies and experimental data concern single
NUMERICAL MODELLING OF MICRO-STRUCTURE USING THE CONCEPT OF ENHANCED CONTINUUM
, 2007
"... Abstract This paper considers the peculiarities arising in numerical implementations of theories for enhanced continua. Firstly, governing equations of such theories are often not strongly elliptic. We propose a technique for reformulating the governing equations that does not affect their truncati ..."
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Abstract This paper considers the peculiarities arising in numerical implementations of theories for enhanced continua. Firstly, governing equations of such theories are often not strongly elliptic. We propose a technique for reformulating the governing equations that does not affect
Preparation of microstructured hydroxyapatite microspheres using oil in water emulsions
, 2004
"... Abstract. Hydroxyapatite (HAP) microspheres with peculiar spheres-in-sphere morphology were prepared by using oil- n-water emulsions and solvent evaporation technique. Ethylene vinyl acetate co-polymer (EVA) was used as the binder material. Preparation of HAP/EVA microspheres was followed by the the ..."
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Abstract. Hydroxyapatite (HAP) microspheres with peculiar spheres-in-sphere morphology were prepared by using oil- n-water emulsions and solvent evaporation technique. Ethylene vinyl acetate co-polymer (EVA) was used as the binder material. Preparation of HAP/EVA microspheres was followed
Results 1 - 10
of
47