THE HIGH-TEMPERATURE TRIBOLOGY OF IRON MATRIX HYPOEUTECTIC ALLOY AFTER UNDER-ANNEALING NORMALIZING
DOI:
https://doi.org/10.7494/mafe.2008.34.1.125Keywords:
cast steel, secondary cementite, wear, transformed ledeburite, friction coefficientAbstract
This work includes the results of high-temperature tribology test of cast alloy with iron matrix. The paper presents the discussion on the results of the studies of wear mechanisms and friction factor of G200CrNiMo4-3-3 adamite cast steel after three variants of under - annealing normalization. During the heat treatment of cast steel four annealing temperatures were applied: 850, 900, 950 and 1050°C. Annealing was conducted for 10 h, and then the samples were cooled at a rate of 48°C/h to room temperature. Four different annealing temperatures resulted in adequate differences in microstructure of test cast steel what determinated tribological properties of the material. Results obtained allow for determination of optimal, from wear resistance point of view, microstructure of test cast steel used for mill rolls.Downloads
References
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