Microstructure and tribological properties of a material with cementite eutectic applied for metallurgical rolls
PBN-AR
Instytucja
Wydział Inżynierii Metali i Informatyki Przemysłowej (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Key Engineering Materials
ISSN
1013-9826
EISSN
1662-9795
Wydawca
Trans Tech Publications
DOI
Rok publikacji
2016
Numer zeszytu
Strony od-do
119--124
Numer tomu
682
Link do pełnego tekstu
Liczba arkuszy
0.4
Słowa kluczowe
EN
microstructure
hardness
tribology
wear
cast steel
Streszczenia
Język
EN
Treść
Three prototype metallurgical rolls were produced on the basis of G200CrNiMo4-3-3 material. The method applied for the microstructure forming was different for each roll: the roll marked WOT - as cast state (without a modification and heat treatment); the metallurgical roll marked WMT - during its casting the FeCaSi deoxidizing was applied and then modification by a complex inoculant and argoning; the metallurgical roll marked WNT - subjected to a heat treatment (incomplete normalizing). The mentioned above differences in the technology of making rolls caused changes in their microstructure. The cementite eutectic and pearlitic matrix occurred in each roll. The main differences in the microstructure of cast steel rolls concerned a morphology of precipitates of hypereutectoid cementite. In the WOT roll cementite was mainly in the Widmannstätten system. Precipitates of hypereutectoid cementite in the WMT roll occurred along grain boundaries of primary austenite. A large fraction of spheroidal hypereutectoid cementite, precipitated in the whole volume of the primary austenite grain, appeared in the WNT roll. The microstructure influenced the rolls hardness and was equal 260 ÷ 350 HBW. Tribological investigations indicated decreasing the abrasive wear resistance with increasing the hypereutectoid cementite fraction within the primary austenite grains. © 2016 Trans Tech Publications.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:096124
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