レール頭頂面変形層における集合組織の発達について(<小特集>X線材料強度小特集)

概要

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In order to clarify the mechanism of initiation of rolling contact fatigue cracking, so called shelling, on the running surface of rails in rails in railway track, the characteristics of the deformed rail surface layer have been investigated by means of electron microscopes (SEM, TEM) and X-ray apparatus comparing the rolling-contacted test pieces and cold-rolled test pieces. A texture is formed as a result of the simple slip deformation of crystals in the deformed surface layer or rails used in track and the rolling contact fatigue-tested rails. This texture disappeared at the topmost surface because of the occurence of some random plastic deformation. On the contrary, the texture of the cold-rolled test pieces results from the complex slip deformation of crystals and does not disappear at the surface.
社団法人日本材料学会の論文
1987-08-15