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Bainitic steel for frogs of rail switches - development and properties
Dlouhý, Ivo ; Zbořil, J. ; Holzmann, Miloslav
Mechanical properties and fracture behaviour of newly developed cast bainitic steel Lo8CrNiMo, predetermined for the frogs of rail switches, has been investigated. Properties of rail steel of the type UIC 900A has been followed for comparison. According to characteristics obtained steel Lo8CrNiMo displays much better fracture resistance when compared to standard rail steel. Dynamic fracture toughness is the same as static fracture toughness. This finding has great practical importance with respect to dynamic loading to frog.

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