Colored Metallography Study of Bainite Steel Used for High Speed Railway Crossing

Abstract:

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Using the technique of colored metallography, the phase compositions of two medium-/low-carbon low-alloy carbide-free bainite steel used for railway crossings are obtained. The etching of the samples was carried out using the Lepera reagent and a mixed reagent of hyposulphite and picric acid respectively. The proportion of the bainite phase was calculated using an image processing system with an optical microscope and the residual austenite content was measured using XRD method. The martensite phase content can then be determined. It is found that the reagents can effectively and quantifiably analyze the phase composition of bainite steel and produce approximately the same results.

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Main Theme:

Edited by:

Jian-Feng Nie and Allan Morton

Pages:

142-145

DOI:

10.4028/www.scientific.net/MSF.654-656.142

Citation:

F. C. Zhang et al., "Colored Metallography Study of Bainite Steel Used for High Speed Railway Crossing", Materials Science Forum, Vols. 654-656, pp. 142-145, 2010

Online since:

June 2010

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Price:

$35.00

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