Temat: rapid crystallization - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examination of cast iron material properties by means of the nanoindentation method
Autorzy:: Trytek, A.
Orłowicz, W.
Tupaj, M.
Mróz, M.
Powiązania:: https://bibliotekanauki.pl/articles/380438.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: żeliwo
krystalizacja szybka
próba indentacji
cast iron
rapid crystallization
indentation test
Opis:: The paper presents results of examination of material parameters of cast iron with structure obtained under rapid resolidification conditions carried out by means of the nanoindentation method.
Źródło:: Archives of Foundry Engineering; 2012, 12, 4; 141-144
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Structural Characterization of Rapidly Solidified Al71Ni24Fe5 Alloy
Autorzy:: Młynarek, Katarzyna
Czeppe, T.
Babilas, R.
Powiązania:: https://bibliotekanauki.pl/articles/2079835.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: solidification process
mechanism of crystallization
rapid solidification
quasicrystalline structure
aluminium alloys
proces krzepnięcia
mechanizm krystalizacji
szybkie krzepnięcie
struktura quasikrystaliczna
stopy aluminium
Opis:: The influence of rapid solidification from the liquid state on the structure of Al71Ni24Fe5 alloy was studied. The samples were prepared by induction melting (ingots) and high pressure die casting into a copper mold (plates). The structure was examined by X-ray diffraction (XRD), light microscopy and high resolution transmission electron microscopy (HRTEM). The mechanism of crystallization was described on the basis of differential scanning calorimetry (DSC) heating and cooling curves, XRD patterns, isothermal section of Al-Ni-Fe alloys at 850°C and binary phase diagram of Al-Ni alloys. The fragmentation of the structure was observed for rapidly solidified alloy in a form of plates. Additionally, the presence of decagonal quasicrystalline phase D-Al70.83Fe9.83Ni19.34 was confirmed by phase analysis of XRD patterns, Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform (IFFT) of transmission electron microscopy images. The metastable character of D-Al70.83Fe9.83Ni19.34 phase was observed because of the lack of thermal effects on the DSC curves. The article indicates the differences with other research works and bring up to date the knowledge about Al71Ni24Fe5 alloys produced by two different cooling rates.
Źródło:: Archives of Foundry Engineering; 2021, 21, 3; 90--95
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Meta-stable solidification created by the detonation method of coating formation
Autorzy:: Wołczyński, W.
Garzeł, G.
Morgiel, J.
Senderowski, C.
Pawłowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/382812.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: krystalizacja
krzepnięcie szybkie
powłoka Fe-Al
faza amorficzna
theory of crystallization
rapid solidification process
Fe-Al coating
meta-stable phase diagram
amorphous phase
Opis:: Particles of the Fe-Al type (less than 50 m in diameter) were sprayed onto the 045 steel substrate by means of the detonation method. The TEM, SAED and EDX analyses revealed that the Fe-Al particles have been partially melted in the experiment of coating formation. Particle undergone melting even within about 80% of its volume. Therefore, solidification of the melted part of particles was expected. Solidification differed significantly due to a large range of chemical composition of applied particles (from 15 at.% Al up to 63 at.% Al). A single particle containing 63 at.% Al was subjected to the detailed analysis, only. The TEM / SAED techniques revealed in the solidified part of particle three sub-layers: an amorphous phase, [...] , periodically situated FeAl + Fe2Al5 phases, and a non-equilibrium phase, [...]. A hypothesis dealing with the inter-metallic phases formation in such a single particle of the nominal composition No = 0.63 is presented. At first, the solid / liquid system is treated as an interconnection: substrate / liquid / nonmelted particle part . Therefore, it is suggested that the solidification occurs simultaneously in two directions: towards a substrate and towards a non-melted part of particle. The solidification mechanism is referred to the Fe-Al meta-stable phase diagram. It is shown that the melted part of particle solidifies rapidly according to the phase diagram of meta-stable equilibrium and at a significant deviation from the thermodynamic equilibrium.
Źródło:: Archives of Foundry Engineering; 2012, 12, 2; 93-96
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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