INFLUENCE OF STACKING-FAULT ENERGY ON ABRASIVE WEAR RESISTANCE OF CASTINGS FROM Fe – 12Mn – 1,2C STEEL COOLED WITH DIFFERENT RATES
https://doi.org/10.17073/0368-0797-2016-9-603-609
Abstract
The research group has investigated the infl uence of the cooling rate of a casting on the coefficient of abrasive wear resistance and has proved that wear resistance is determined by the thickness of the layer hardened by twinning-induced plasticity, which is formed on the wearing surface. It was found that the maximum thickness of the hardened layer is formed both at high and at low cooling rates, which is connected with the decrease in the value of the stacking-fault energy (SFE). This value, in its turn, varies depending on the content of manganese, chromium and silicon. At medium cooling rate the achieved doping level of austenite results in the increase of the SFE value. It also hampers the process of twinning-induced plasticity (TWIP) and results in forming of a hardened layer of minimum thickness or this layer is not formed at all.
Keywords
cast high-manganese steel,
stacking-fault energy,
abrasive wear resistance,
twinning-induced plasticity
Supporting agencies: Russian Scientific Foundation (project no. 15-19-10020)
About the Authors
K. N. Vdovin
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair “Materials Science and Foundry”
Russian Federation
Dr. Sci. (Eng.), Professor, Head of the Chair “Materials Science and Foundry”
D. A. Gorlenko
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk
Russian Federation
Cand. Sci. (Eng.), Assistant of the Chair “Materials Science and Foun dary”
Russian Federation
Cand. Sci. (Eng.), Assistant of the Chair “Materials Science and Foun dary”
N. A. Feoktistov
Magnitogorsk State Technical University named after G.I. Nosov, Magnitogorsk
Russian Federation
Cand. Sci. (Eng.), Senior Lecturer of the Chair “Materials Science and Foundary”
Russian Federation
Cand. Sci. (Eng.), Senior Lecturer of the Chair “Materials Science and Foundary”
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Review
For citations:
Vdovin K.N., Gorlenko D.A., Feoktistov N.A. INFLUENCE OF STACKING-FAULT ENERGY ON ABRASIVE WEAR RESISTANCE OF CASTINGS FROM Fe – 12Mn – 1,2C STEEL COOLED WITH DIFFERENT RATES. Izvestiya. Ferrous Metallurgy. 2016;59(9):603-609. (In Russ.) https://doi.org/10.17073/0368-0797-2016-9-603-609
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