EFFECT OF Al AND Si ON THE FORMATION OF AUSTENITE IN INTERCRITICAL TEMPERATURE RANGE IN Cr – Ni – Mo-STEEL
https://doi.org/10.17073/0368-0797-2015-9-677-681
Abstract
Aluminum and silicon alloying of Cr – Ni – Mo steel has been investigated. The described steel is used in energetic and heavy machine building engineering. The main aim of the present work was to improve mechanical properties of the steel such as plasticity and impact strength. The high temperature X-ray analysis is applied for understanding the ratio of α- & γ-phases in various temperature ranges. The critical points were determined and it was shown that the aluminum addition expands the critical temperature region while the silicon addition only moves this region to the higher temperatures. The crystal lattice parameter of austenite is the smallest at 740 °С. Silicon addition makes this temperature higher up to 760 °С. The influence of aluminum is more intensive, the temperature is 780 °С.
About the Authors
M. A. Gervas’ev
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr. Sci.(Eng.), Professor, Head of the Chair of Metal Science,
19, Mira str., Ekaterinburg, 620002
A. S. Yurovskikh
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of Physics and Heat Treatment of Metals,
19, Mira str., Ekaterinburg, 620002
S. V. Belikov
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of Physics and Heat Treatment of Metals,
19, Mira str., Ekaterinburg, 620002
O. V. Maslova
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Senior Lecturer of the Chair of Metal Science,
19, Mira str., Ekaterinburg, 620002
A. S. Zhilin
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of Metal Science,
19, Mira str., Ekaterinburg, 620002
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Review
For citations:
Gervas’ev M.A., Yurovskikh A.S., Belikov S.V., Maslova O.V., Zhilin A.S. EFFECT OF Al AND Si ON THE FORMATION OF AUSTENITE IN INTERCRITICAL TEMPERATURE RANGE IN Cr – Ni – Mo-STEEL. Izvestiya. Ferrous Metallurgy. 2015;58(9):677-681. (In Russ.) https://doi.org/10.17073/0368-0797-2015-9-677-681
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