Study on Continuous Cooling Transformation and Microstructure of 500 Mpa Grade Steel for Railway Freight Car Body

Author:

Jiang Mao Lin1,Yu Wei1

Affiliation:

1. University of Science and Technology Beijing

Abstract

Complete the composition design and laboratory smelting of high strength weathering steel for railway freight car body of grade 500MPa. The actual continuous cooling transformation curve (CCT curve and cold speed of 0.5-50 °C/s) was measured through the Gleeble3500 thermal simulation test machine with expansion method and alloy phase method, observing the microstructures by optical microscope and SEM. The hardness of the samples under different cooling rates were measured by Vivtorinox hardness tester. Study on the effect of cooling rates on the microstructures and hardness of the steels.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference10 articles.

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2. H.E. Townsend, Effects of alloying elements on the corrosion of steel in industrial atmosphere, Corrosion, 57(6) (2001) 497-501.

3. S.B. Yang, Current situation and demand of railway freight car body material, Railway locomotive and rolling stock, 26(1) (2006) 1-3.

4. Q. Yu, Development status and prospect of weathering steel, Journal of iron and Steel Research, 19(11) (2007) 1-4.

5. N. Toshiyasu, H. idekiK, K.N. azuhiko, et a1, Effect of Co and Ni on the behavior of low alloy steels in wet/dry environment,Corrosion, 42 (2000) 1611-1621.

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