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Wyszukujesz frazę "Kolan, C." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Influence of stress relief annealing on the microstructure and properties of GX12CrMoVNbN9-1(GP91) cast steel
Autorzy:
Golański, G.
Kupczyk, J.
Kolan, C.
Powiązania:
https://bibliotekanauki.pl/articles/379803.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat treatment
cast steel microstructure
mechanical properties
martensitic cast steel
obróbka cieplna
mikrostruktura staliwa
właściwości mechaniczne
staliwo martenzytyczne
Opis:
The paper presents an effect of stress relief annealing, applied to casts after the repair by welding, on the microstructure and mechanical properties of quenched and tempered martensitic GX12CrMoVNbN9 – 1 cast steel (called GP91). The test pieces being the subject of research were taken out from a test coupon. Heat treatment of GP91 cast steel was carried out at the parameters of temperature and time appropriate for the treatment of multi-ton steel casts, while stress relief annealing was performed at the temperatures of 730 and 750ºC. After quenching and tempering GP91 cast steel was characterized by the microstructure of high-tempered martensite with numerous precipitations of carbides of diverse size. Mechanical properties of the investigated cast steel after heat treatment fulfilled the standard requirements. Stress relief annealing contributes to the processes of recovery and recrystallization of the matrix as well as the privileged precipitation of M23C6 carbides on grain boundaries. Changes in the microstructure of the examined cast steel cause deterioration in mechanical properties – the higher the temperature of stress relief annealing, the greater the deterioration.
Źródło:
Archives of Foundry Engineering; 2011, 11, 2 spec.; 59-63
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of sigma phase precipitates with respect to the functional properties of duplex cast steel
Autorzy:
Stradomski, Z.
Brodziak-Hyska, A.
Kolan, C.
Powiązania:
https://bibliotekanauki.pl/articles/382800.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
innowacyjne materiały odlewnicze
innowacyjne technologie odlewnicze
staliwo typu duplex
faza sigma
obróbka cieplna
współczynnik kształtu
innovative foundry material
innovative foundry technologies
duplex cast steel
sigma phase
heat treatment
shape factor
Opis:
The paper presents the results of examination concerning optimization of the \sigma phase precipitates with respect to the functional properties of ferritic-austenitic cast steel. The examined material comprised two grades of corrosion-resistant cast steel, namely GX2CrNiMoN25-6-3 and GX2CrNiMoCuN25-6-3-3, used for example in elements of systems of wet flue gas desulphurisation in power industry. The operating conditions in media heated up to 70 C and containing Cl- and SO4 ions and solid particles produce high erosive and corrosive wear. The work proposes an application of the \sigma phase as a component of precipitation strengthening mechanism in order to increase the functional properties of the material. Morphology and quantities of \sigma phase precipitates were determined, as well as its influence on the erosion and corrosion wear resistance. It was shown that annealing at 800 C or 900 C significantly improves tribological properties as compared with the supersaturated state, and the best erosion and corrosion wear resistance achieved due to the ferrite decomposition [...] was exhibited in the case of annealing at the temperature of 800 C for 3 hours.
Źródło:
Archives of Foundry Engineering; 2012, 12, 2; 75-78
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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