Chemical Composition and Physical Properties for China Railway Grade B Cast Steel Wheel

Yong Xiang Zhao; Bing Yang; Guo Xiang Song

doi:10.4028/www.scientific.net/KEM.480-481.42

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 480-481Chemical Composition and Physical Properties for...

Chemical Composition and Physical Properties for China Railway Grade B Cast Steel Wheel

Abstract:

Chemical composition and physical properties are measured and inspected for China railway grade B cast steel wheel. The wheel shows slight higher for chemical elements C and Cr, much higher for Al and Mo, and significant lower for P and S comparing to the AAR code. Gross pearlites plus net-like continuum ferrites appear in wheel hub; ferrites exhibit also net-likely but dis-continuously in web with a shot peening effect; and in rim, dis-continuous ferrites with few of net-like signs distribute randomly due to a quenching and tempering effect. Bigger hardness values appear in rim; and the values in web and hub appear a decrease in sequence. Major flaw affecting material condense is shrinkage porosities. Flawed content is closely between hub and web. More condense appears in rim. Material inclusions are non-metallic compounds of MnS and Al2O3. They appear sphere-like shapes having around 8 μm diameters.

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Periodical:

Key Engineering Materials (Volumes 480-481)

Pages:

42-46

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.480-481.42

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Online since:

June 2011

Authors:

Yong Xiang Zhao, Bing Yang, Guo Xiang Song

Keywords:

Chemical Composition, Grade B Cast Steel, Physical Properties, Railway, Wheel

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