The structure and properties of steel with different pearlite morphology and its resistance to abrasive wear

• Autorzy: Herian J. , Aniołek K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The analyse of pearlite morphology changes as a result of hot rolling process and isothermal annealing. Design/methodology/approach: Physical modelling of isothermal annealing for a transition point of 520-620°C was carried out using a Gleeble simulator. A scanning electron microscope was used for a quantitative evaluation of the microstructure. Findings: The obtained test results confirm that these methods can be effectively used in shaping the pearlitic structure and properties of the steel. During numerical simulation of a ride of a rail-vehicle through a switch, the load acting on a block section being part of the vehicle structure was determined. The load values were used in simulation of the resistance to abrasive wear, which was carried out in physical simulation. Practical implications: In physical modelling of tests of resistance to abrasive wear for the steel grade R260 after hot rolling and isothermal annealing it has been proved that this feature is a function of the steel structure and properties in the given operation conditions (load and slide magnitude). Abrasive wear of the rail steel is the more intensive, the larger the load at a constant slide is. Originality/value: An advantageous pearlitic morphology of steel (block sections) with interlamellar distance in the order of 0.12-0.13 μm, ensuring hardness of about 340-350 HB, is facilitated by a hot rolling process combined with isothermal annealing.

Słowa kluczowe

EN

abrasive wear; block sections; switch; pearlite morphology; isothermal annealing

PL

zużycie ścierne; kształtowniki klockowe; rozjazd szynowy; morfologia perlitu; wyżarzanie izotermiczne

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 83--86
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Herian J.

autor

Aniołek K.

• Department of Process Modelling and Medical Engineering, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

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