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Continuous Cooling Transformation of Chromic Microalloyed High Carbon Heavy Haul Wheel Steels

Jun Xing

Abstract

The microstructure transformation of two chromic-microalloyed high carbon steels during continuous cooling process were simulated on Gleeble-3500 thermomechanical simulator.The microstructure evolution of the two steels were analyzed and compared.The results showed that the higher chromium steel has lower critical cooling rate,higher hardenability,smaller pearlite colony size,pearlite lamellar spacing and higher Rockwell Hardness.At cooling speed of 5.0,8.0 and 10.0 ℃/s,there are a small amount of bainite and acicular ferrite appeared and more in the higher chromium steel.

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Available abstract

Key concepts: Pearlite, Materials science, Acicular ferrite, Metallurgy, Bainite, Lamellar structure, Hardenability, Microstructure