Autor: Polkowski, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: EBSD Strain Analysis of CuZn10 Cast Alloy During Cavitational Wear
Autorzy:: Jasionowski, R.
Zasada, D.
Polkowski, W.
Powiązania:: https://bibliotekanauki.pl/articles/380062.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: EBSD method
cavitation
cavitational erosion
strain analysis
metoda EBSD
kawitacja
erozja kawitacyjna
analiza odkształceń
Opis:: Microstreams of liquid formed during the implosion of cavitation bubbles and the effects of pressure waves coming from disappearing bubbles are the main causes of damage of the washed surface, leading to loss of material (the cavitation erosion). Repeated cavitation implosions cause non-uniform stress state resulting in the strengthening of the surface layer, change of micro-geometry and surface cracks leading to detachment of the material particles. Course of cavitation erosion process depends on the effects of plastic deformation at the beginning of the destruction. The aim of this study was analysis of plastic deformation by EBSD method of CuZn10 cast alloy at the beginning of the cavitation destruction process.
Źródło:: Archives of Foundry Engineering; 2013, 13, 1 spec.; 51-56
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Destruction Mechanism of ZnAl4 as Cast Alloy Subjected to Cavitational Erosion Using Different Laboratory Stands
Autorzy:: Jasionowski, R.
Polkowski, W.
Zasada, D.
Powiązania:: https://bibliotekanauki.pl/articles/381763.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cavitation
cavitation wear
alloy ZnAl
cast alloy
destruction mechanism
kawitacja
zużycie
stop ZnAl
stop żeliwa
destrukcja
Opis:: The main reason of a cavitational destruction is the mechanical action of cavitation pulses onto the material’s surface. The course of cavitation destruction process is very complex and depends on the physicochemical and structural features of a material. A resistance to cavitation destruction of the material increases with the increase of its mechanical strength, fatigue resistance as well as hardness. Nevertheless, the effect of structural features on the material’s cavitational resistance has been not fully clarified. In the present paper, the cavitation destruction of ZnAl4 as cast alloy was investigated on three laboratory stands: vibration, jet-impact and flow stands. The destruction mechanism of ZnAl4 as cast alloy subjected to cavitational erosion using various laboratory stands is shown in the present paper.
Źródło:: Archives of Foundry Engineering; 2016, 16, 1; 19-24
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of Crystalographic Texture on Cavitation Wear Resistance of As-Cast CuZn10 Alloy
Autorzy:: Jasionowski, R.
Polkowski, W.
Zasada, D.
Powiązania:: https://bibliotekanauki.pl/articles/355595.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: texture
cavitation
cavitation erosion
electron backscatter diffraction
EBSD
CuZn10 alloy
Opis:: Analysis of a crystallographic texture (a preferred orientation) effect on cavitation wear resistance of the as-cast CuZn10 alloy, has been conducted in the present paper. The experiment was conducted on the CuZn10 alloy samples with <101>//ND or <111>//ND preferred orientations (where the ND denotes direction that is perpendicular to the exposed surface). The cavitation resistance examinations have been carried out on three different laboratory stands (namely, vibration, jet-impact and flow stands) that are characterized by a various intensity and a way of cavitation’s excitement. Obtained results point towards a higher cavitation resistance of the CuZn10 alloy with the <111>//ND preferred orientation.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 2; 935-940
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effect of aluminum content on the microstructure and cavitation wear of feal intermetallic alloys
Autorzy:: Jasionowski, R.
Zasada, D.
Polkowski, W.
Powiązania:: https://bibliotekanauki.pl/articles/386821.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: intermetallic alloys
cavitation
cavitation wear
Electron Backscattered Diffraction (EBSD)
stopy międzymetaliczne
kawitacja
EBSD
Opis:: Intermetallic-based alloys (so called intermetallics) of the Fe-Al binary system are modern construction materials, which in re- cent decades have found application in many branches of the power, chemical and automotive industries. High resistance of FeAl based alloys to cavitational erosion results first of all from their high hardness in the as-cast state, large compressive stresses in the material, as well as homogeneous structure. In the present paper, the effect of aluminum content on the microstructure, texture and strain imple- mented upon cavitation wear of FeAl intermetallic alloys, have been analyzed by field emission gun scanning electron microscopy (FEG SEM) and electron backscatter diffraction (EBSD) analysis. Obtained results of structural characterization indicates that with increasing aluminium content effects of orientation randomization (weakening of <100>//ND casting texture), grain refinement and rising of mechani- cal strenght (and so cavitational resistance) take place.
Źródło:: Acta Mechanica et Automatica; 2014, 8, 1; 49-52
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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