Zuzanka Trojanová
Charles University in Prague
Composite numberUltimate tensile strengthLogarithmic decrementDeformation (engineering)Strain rateDislocationComposite materialAcoustic emissionHardening (metallurgy)MetallurgyMaterials scienceStress relaxationMagnesium alloyAlloySofteningAtmospheric temperature rangeMagnesiumCrystal twinningMicrostructureStress (mechanics)
195Publications
20H-index
1,651Citations
Publications 196
Newest
#2Jan DžuganH-Index: 11
Last. Zuzanka TrojanováH-Index: 20
view all 5 authors...
Source
#1Zuzanka TrojanováH-Index: 20
#2Zdeněk DrozdH-Index: 9
Last. Jan DžuganH-Index: 11
view all 4 authors...
Source
#1Zuzanka TrojanováH-Index: 20
#2Zdeněk DrozdH-Index: 9
Last. Pavel LukáčH-Index: 31
view all 8 authors...
An extruded magnesium AZ31 magnesium alloy was processed by rotary swaging (RSW) and then deformed by tension and compression at room temperature. The work-hardening behaviour of 1–5 times swaged samples was analysed using Kocks-Mecking plots. Accumulation of dislocations on dislocation obstacles and twin boundaries is the deciding factor for the strain hardening. Profuse twinning in compression seems to be the reason for the higher hardening observed during compression. The main softening mecha...
Source
The textures of three samples of zirconium alloys were compared with the textures of seven samples of alpha-zirconium deformed at 300°C under uniaxial tension from 5 to 30% (strain step 5%). Texture measurements by neutron diffraction were performed on a KSN-2 neutron diffractometer located at the LVR-15 research reactor of the Research Centre Řež, Czech Republic. X-ray measurements were performed on a theta/theta X'Pert PRO diffractometer with a Cr tube. The observed data were processed by the ...
Source
#1Milan UhríčikH-Index: 6
Last. Patrícia HanusováH-Index: 2
view all 6 authors...
Amplitude dependent internal friction (ADIF) was measured in three AZ magnesium alloys. Two types of experiments were performed: ADIF was measured step by step with the increasing strain amplitude and ADIF was measured after predeformation of samples in torsion. All experiments were done at room temperature. The quality factor was used as a measure of internal friction (IF). The quality factor decreased in the region of smaller amplitudes, and approaching some critical amplitude, ecr, rapidly in...
Source
#1Zuzanka TrojanováH-Index: 20
Last. Pavel LukáčH-Index: 31
view all 6 authors...
An AX52 magnesium alloy (nominal composition Mg-5Al-2Ca in w.%) was submitted to equal channel angular pressing (ECAP) using processing route A; 1–8 passes through the ECAP tool were applied. The thermal conductivity of the ECAP samples was measured using a flash method in the temperature interval from room temperature up to 350 °C. The microstructure and texture of the samples were studied by light and electron microscopy. The severe plastic deformation, realized by the ECAP, influences the the...
Source
#1Radek ProcházkaH-Index: 9
#2Peter SlámaH-Index: 2
Last. Zuzanka TrojanováH-Index: 20
view all 5 authors...
An ultrafine-grained EN AW 6082 aluminum alloy was prepared by continuous serve plastic deformation (i.e., thermo-mechanical equal channel angular pressing (ECAP)–Conform process). A miniaturized tensile testing technique was used for estimating local mechanical properties with the aim to reveal the inhomogeneity of elastic and plastic properties in a workpiece volume. These inhomogeneities may appear due to the irregular shear strain distribution in a Conformed wire. Miniaturized samples for te...
Source
#1Zuzanka TrojanováH-Index: 20
#2Zoltán SzárazH-Index: 8
Last. Jan DžuganH-Index: 11
view all 5 authors...
AX61 magnesium alloy was reinforced with short Saffil fibres using squeeze cast technology. Samples were cut from the casting in two directions: parallel and perpendicular to the fibre plane. Samples were deformed in compression at various temperatures from room temperature to 300 °C. Various strengthening mechanisms such as load transfer, increased dislocation density, Orowan and Hall–Petch strengthening were analysed. During deformation, the stress relaxation tests were subsequently performed....
Source
#1Kateřina MertováH-Index: 4
#2Jan PalánH-Index: 4
Last. Zuzanka TrojanováH-Index: 20
view all 10 authors...
This recent study deals with the optimization of the mechanical performance of Grade 2 and Grade 4 titanium with Conform severe plastic deformation (SPD) processing and subsequent rotary swaging. A comprehensive study of the materials behaviour and characterisation during and after processing is given by (finite element method - FEM) numerical simulation, microscopy methods and mechanical testing. The mechanical and fatigue properties are discussed in terms of texture and microstructure evolutio...
Source
#1Zuzanka Trojanová (Charles University in Prague)H-Index: 20
#2Zdeněk Drozd (Charles University in Prague)H-Index: 9
Last. Manoj Gupta (NUS: National University of Singapore)H-Index: 78
view all 8 authors...
Magnesium samples reinforced with 0.7, 1.4, and 2.4 vol.% of Inconel 718 particles were prepared using a disintegrated melt deposition technique followed by hot extrusion. Mechanical properties, thermal expansion, and damping were studied with the aim of revealing the particle influence on the microstructure, texture, tensile and compressive behavior, thermal expansion coefficient, and internal friction. The flow stresses are significantly influenced by the test temperature and the vol.% of part...
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.