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Wyszukujesz frazę "EZ33" wg kryterium: Wszystkie pola


Wyświetlanie 1-7 z 7
Tytuł:
Grain Boundary Wetting and Material Performance in an Industrial EZ33A Mg Cast Alloy
Autorzy:
Straumal, A. B.
Tsoy, K. V.
Mazilkin, I. A..
Nekrasov, A. N.
Bryła, K.
Powiązania:
https://bibliotekanauki.pl/articles/352347.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
grain boundary
wetting
cast alloy
Mg
mechanical properties
Opis:
The grain boundary wetting phase transition in an industrial EZ33A cast alloy is studied. 12% of the grain boundaries are completely wetted at the temperature slightly higher than the eutectic transformation temperature (530°C). The fraction of wetted grain boundaries increases with temperature, reaches a maximum of 85% at 570°C, and does not change further until the alloy melts. In the as-cast state, the alloy has low ductile properties at the ambient temperature. The microstructure in the as-cast state corresponds to the wetting state at about 560°C, which indicates that the cooling rate in casting is almost equal to that in quenching. The volume and the surface fraction of the second phase and the hardness measured at the least wetted state of samples point toits good machinability. The wetting data are used to suggest a sequence of heat treatment and machining for processing EZ33A alloy parts.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 3; 869-873
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of structure and properties of welded joint of magnesium alloy EZ33A-T5
Autorzy:
Kocurek, R.
Adamiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/380590.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mechanical properties
weldability of alloy
magnesium alloy
EZ33
microstructure
quantitative procedure
właściwości mechaniczne
spawalność stopu
stop magnezu
mikrostruktura stopu
metoda ilościowa
Opis:
In recent years, improvement of casting magnesium alloys welding technology has resulted in an increase in the number of publications on this topic. The symptom of this trend is to replace traditional construction materials of magnesium alloys. Magnesium alloys of Mg-Zn-RE-Zr group are used in the automotive, aerospace and defense industries, mainly as gravitional casts to sand moulds or die-casting. Casting defects often appear in these casts (misruns, micro-shrinkage, cracks). The welding technologies are most often applicable to repair of casts, mainly nonconsumable electrode welding in the inert gas cover. The premise of this research work was to define structure and mechanical properties of welded joints of magnesium alloy EZ33A-T5. For this purpose, were attempted trails welding and conducted non-destructive testing, metallographic and strength mechanical tests allowing to assess the properties of welded joints. Evaluation of properties of welded joints was possible by carrying out welding trials and execution of non-destructive tests and metallographic. Research of the microstructure was used with the methodology and test procedures for the quantitative evaluation of the structure of welded joints which was developed in the Department of Materials Science of Silesian University of Technology.
Źródło:
Archives of Foundry Engineering; 2013, 13, 1 spec.; 65-71
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Passive Structural Acoustic Control of the Smart Plate - FEM Simulation
Autorzy:
Kozień, M.
Wiciak, J.
Powiązania:
https://bibliotekanauki.pl/articles/1506800.pdf
Data publikacji:
2010-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.15.Mt
34.50.Ez
77.22.Gm
Opis:
Finite element simulations of passive damped system applied to the simply-supported excited squared steel plate, is the aim of the analysis. The full mechanical, piezoelectric, electric and acoustic field coupling is analysed in Ansys Package. As the result the acoustic pressure radiated by plate is analysed. The results show possibility of application of the discussed method to reduction of the sound pressure level in realistic engineering structures.
Źródło:
Acta Physica Polonica A; 2010, 118, 6; 1186-1188
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of Application of FGM Piezoelectric Actuators for Active Reduction of Beam Vibrations
Autorzy:
Ferdek, U.
Kozień, M.
Powiązania:
https://bibliotekanauki.pl/articles/1400085.pdf
Data publikacji:
2013-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.15.Mt
34.50.Ez
77.22.Gm
Opis:
In the paper results of simulation of active reduction of vibration of the free-fixed beam by piezoelectic actuators made of functionally graded materials are presented. The aim of simmulation was to estimate sensitivity of the process of reduction. The effect of the level of gradation of material properties and amplitude of the applied voltage on effectiveness of the reduction process was analyzed. The analysis was reduced to the case of excited vibrations of the first mode and was performed by application of the finite element package Ansys.
Źródło:
Acta Physica Polonica A; 2013, 123, 6; 1044-1047
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Active and Passive Damping of Plate Vibration by Piezoelectric Actuators - FEM Simulation
Autorzy:
Kozień, M.
Kołtowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/1504386.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.15.Mt
34.50.Ez
77.22.Gm
Opis:
Application of piezoelectric shunt elements, distributed in suitable configuration on the external surfaces of vibrating plate is one of the contemporary method of reduction of its vibroactivity. The two techniques are applied: passive one and active one. The aim of simulations was to compare the minimisation effect for the two attempts. The plate was excited by point harmonic force with constant amplitude. Vibrations for the first mode were considered.
Źródło:
Acta Physica Polonica A; 2011, 119, 6A; 1005-1008
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on Possibility to Apply Piezoelectric Actuators for Active Reduction of Torsional Beams Vibrations
Autorzy:
Augustyn, E.
Kozień, M.
Powiązania:
https://bibliotekanauki.pl/articles/1196928.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.15.Mt
34.50.Ez
77.22.Gm
Opis:
In this paper, the results of several tests concerning possible application of piezoelectric elements to reduce torsional vibrations of a beam are presented and discussed. The proposed method of application is a novel one. The piezoelectric elements are positioned in two pairs and glued to the beam at the chosen cross-section. These elements are activated using a harmonically varying voltage of the same amplitude and opposite in phase. Simulations are performed regarding the active reduction of the lowest natural frequencies of vibration of the fixed-free beam with the use of piezoelectric actuators. The results of these simulations are obtained by means of the finite element method (ANSYS).
Źródło:
Acta Physica Polonica A; 2014, 125, 4A; A-164-A-168
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Choosing of Optimal Voltage Amplitude of Four Pairs Square Piezoelectric Elements for Minimization οf Acoustic Radiation of Vibrating Plate
Autorzy:
Kozień, M.
Wiciak, J.
Powiązania:
https://bibliotekanauki.pl/articles/1807735.pdf
Data publikacji:
2009-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.20.Tb
33.15.Mt
34.50.Ez
77.22.Gm
Opis:
The study is a next part of earlier works by the authors, and explores how does the sequence of activated actuators and the level of applied voltage affect the radiated acoustic energy. The analysis uses the finite element method for structural vibrations and combination of the finite element and the intensity hybrid method to assess the level of sound radiation. The vibrating element is a steel plate with glued on actuators, supported on one edge and excited by a harmonically variable, concentrated load with a constant amplitude value.
Źródło:
Acta Physica Polonica A; 2009, 116, 3; 348-350
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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