KINETICS OF BAINITE TRANSFORMATION OF Cr –Ni – Mo STEEL WITH ALUMINUM AND SILICON ALLOYING
https://doi.org/10.17073/0368-0797-2014-7-57-60
Abstract
The authors have investigated aluminum and silicon alloying of Cr – Ni – Mo steels. Quantitative data on undercooling austenite decomposition under bainite transformation temperature range was obtained by magnetometric method. The Avrami equation was adopted for the kinetics of bainite transformation analysis. It was shown that the silicon addition reduces the temperature range of bainite transformation and increases the stability of undercooling austenite. However, long durations of holding may cause decomposition of undercooling austenite by perlitic mechanism. Aluminum in analyzed alloys moves the region of bainite transformation to higher temperatures, at the same time, the incubation period of bainite transformation reduces. Based on obtained data, it is recommended not to use aluminum alloying for massive billets because continuous cooling causes the decrease in despersity of bainite and reduces mechanical properties of bainite alloys.
About the Authors
M. A. Gervas’ev
Ural Federal University named after the fi rst President of Russia Yeltsin B.N. (Mira str., 19, Ekaterinburg, 620002, Russia)
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair of Metal Science
O. V. Maslova
Ural Federal University named after the fi rst President of Russia Yeltsin B.N. (Mira str., 19, Ekaterinburg, 620002, Russia)
Russian Federation
Senior Lecturer of the Chair of Metal Science
Russian Federation
Senior Lecturer of the Chair of Metal Science
S. M. Illarionova
Ural Federal University named after the fi rst President of Russia Yeltsin B.N. (Mira str., 19, Ekaterinburg, 620002, Russia)
Russian Federation
Russian Federation
Head of the laboratory of the Chair of Heat Treatment and Physics of Metals
K. A. Romanova
Ural Federal University named after the fi rst President of Russia Yeltsin B.N. (Mira str., 19, Ekaterinburg, 620002, Russia)
Russian Federation
Master degree student
Russian Federation
Master degree student
A. S. Zhilin
Ural Federal University named after the fi rst President of Russia Yeltsin B.N. (Mira str., 19, Ekaterinburg, 620002, Russia)
Russian Federation
Cand. Sci. (Eng.), Assoc. Professor of the Chair of Metal Science
Russian Federation
Cand. Sci. (Eng.), Assoc. Professor of the Chair of Metal Science
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Review
For citations:
Gervas’ev M.A., Maslova O.V., Illarionova S.M., Romanova K.A., Zhilin A.S. KINETICS OF BAINITE TRANSFORMATION OF Cr –Ni – Mo STEEL WITH ALUMINUM AND SILICON ALLOYING. Izvestiya. Ferrous Metallurgy. 2014;57(7):57-60. (In Russ.) https://doi.org/10.17073/0368-0797-2014-7-57-60
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