The Effect of Nitrogen and Microalloyng Elements (V and V + Al) on Austenite Grain Growth of 40Cr8 Steel

• Autorzy: Adrian H. , Głowacz E.

Warianty tytułu

PL

Wpływ azotu i pierwiatków mikrostopowych (V i V + Al) na rozrost ziarna austenitu stali 40Cr8

• Języki publikacji: EN

Abstrakty

EN

The effect of nitrogen and microalloying elements V and V+A1 on austenite grain growth of steel containing 0,4 %C and 2 %Cr in austenitizing temperaturę rangę of 850-1200 °C and time rangę of 1 to 5h was investigated. Using a thermodynamic model the contents of undissolved vanadium carbonitride, V(C,N), and aluminium nitride, A1N, were calculated at austenitizing temperatures. Using Smith-Zener eąuation [1] and calculated undissolved carbonitride and aluminium nitride contents as well as austenite grain size, the mean radius, r, of precipitates was calculated. The size distributions of intercept length of austenite grains were analysed. Strong effect of nitrogen content on austenite grain growth of microalloyed steel was observed.

PL

W pracy analizowano wpływ azotu oraz mikrododatków V i V+A1 na wielkość ziarna austenitu stali zawierającej 0,4 %C i 2 %Cr w zakresie temperatur od 850 do 1200 C, i czasu od 1 do 5 godzin. Za pomocą modelu termodynamicznego obliczono zawartość nierozpuszczonych wydzieleń węglikoazotku wanadu, V(C,N), oraz azotku aluminium, A1N, przy temperaturach austenityzowania. Na podstawie analizy wielkości ziarna austenitu i zawartości nierozpuszczonych wydzieleń V(C,N) i A1N, za pomocą równania Smith'a-Zener'a [1], wyznaczono rozmiar wydzieleń V(C,N) i A1N dla analizowanych czasów. Analizowano rozkłady długości cięciw ziarn austenitu. Zaobserwowano znaczący wpływ zawartości azotu na rozrost ziarn austenitu badanej stali mikrostopowej.

Słowa kluczowe

EN

austenite; austenitic steel; micro-alloyed steel

PL

austenit; stal austenityczna; stal mikrostopowa

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2010
• Tom: Vol. 55, iss. 1
• Strony: 107--116
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Adrian H.

autor

Głowacz E.

• Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, 30 Mickiewicza Av. Poland

Bibliografia

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