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Influence of nonmetallic inclusions on microbreaks formation in wheel steel and railway wheels

Gubenko S., Proidak Y., Kozlovsk'yy A., Shramko O., Is'kov M.

Transport Problems

2008

T. 3, z. 3

77-81

It is well known that formation of defects of many types during railway wheels service somehow or other is connected to nonmetallic inclusions in wheel steel. Microbreakes connected with nonmetallic inclusions have different origin. The first one is "deformational", the second is "thermal" and the third is "hydrogenous". The objective of this work is the study of nature of microbreaking in wheel steel relative to nonmetallics. Mechanisms of microbreaking of all types near different nonmetallics had been investigated and their influence on safety threshold of railway wheels had been analyzed herein.