The Kinetic of Austenite Grain Growth in Steel for Wind Power Plant Shafts

• Autorzy: Krawczyk J. , Adrian H.

Warianty tytułu

PL

Kinetyka rozrostu ziarna austenitu w stali na wały siłowni wiatrowych

• Języki publikacji: EN

Abstrakty

EN

The results of iiwestigations of the influence of the temperaturę and time of austenitising on the austenite grain size in 34CrNiMo6 steel - are presented in the hereby paper. This type of steel is used for wind power plant shafts. Determination of the austenite grain growth kinetics enables designing the heat treatment technology of large forgings in such a way as to obtain uniform and smali grains. The temperaturę and time ranges, which can lead to the abnormal austenite grain growth and in conseąuence to qualitative worsening of forgings (introduction of the so-called structural notches) were determined. When discussing the reasons of the abnormal grain growth the simulation of the carbonitrides dissolving process was taken into account.

PL

W pracy przedstawiono wyniki badań wpływu temperatury i czasu austenityzowania na wielkość ziarna austenitu w stali 34CrNiMo6. Jest to stal stosowana na wały siłowni wiatrowych. Określenie kinetyki wzrostu ziarna austenitu pozwala na projektowanie technologii obróbki cieplnej dużych odkuwek tak aby uzyskać możliwie drobne, równomierne ziarno. Określono zakresy temperatur i czasów austenityzowania, które mogą prowadzić do anormalnego rozrostu ziarna austenitu a w konsekwencji do pogorszenia własności odkuwki (wprowadzenia tzw. karbów strukturalnych). W dyskusji przyczyn wystąpienia anormalnego rozrostu ziarna uwzględniono symulację procesu rozpuszczania węglikoazotków.

Słowa kluczowe

EN

austenite; grain size; wind power plant shaft; low alloy steel; carbonitrides

PL

austenit; wzrost ziaren; wał siłowni wiatrowych; stal niskostopowa

• 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: 91--99
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Krawczyk J.

autor

Adrian H.

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

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