Effect of pearlitic morphology with varying fineness on the cavitation erosion behavior of eutectoid rail steel |
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| Affiliation: | 1. Materials Science Programme, Indian Institute of Technology Kanpur, Kanpur 208016, India;2. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India;3. Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India |
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| Abstract: | The present work discusses the effect of the pearlitic morphology with varying fineness on the cavitation erosion behavior of eutectoid rail steel. Cavitation erosion of three different types of the pearlitic steels (furnace-cooled, air-cooled, and forced-air-cooled) consisting of coarse, fine, and very fine microstructures were tested in 3.5% NaCl solution and compared with that of the as-received pearlitic rail steel. The variation in the mean depth of erosion (MDE) and mean depth erosion rate (MDER) with erosion time was analyzed. Furthermore, the cavitation erosion resistance of the as-received, the air-cooled, and the forced-air-cooled was found to be 1.03, 1.51, and 2.14 times better than the furnace-cooled pearlitic steel, respectively. It was concluded that the cavitation erosion resistance of the pearlitic steel increased with the increase in the fineness of the microstructure. |
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| Keywords: | Cavitation erosion Pearlite Furnace-cooled Air-cooled Hardness Mean depth of erosion (MDE) Mean depth erosion rate (MDER) |
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