Preliminary communication

Dependence of hardness and impact energy on cooling time Δt8/5and temperature for S960QL

I. Samardžić ; Faculty of Mechanical Engineering Slavonski Brod,Croatia
M. Dunđer ; Department for Polytechnics, Faculty of Philosophy, University of Rijeka, Croatia
T. Vuherer ; Faculty of MechanicalEngineering, Maribor, Slovenia

Abstract

The paper deals with research into dependence of hardness and impact energy of thermal cycle simulated specimens of fine-grained structural steel S960QL on cooling time from 800 to 500 °C and on tested temperature. Results were obtained by measuring hardness of HV 10 and by experimental testing of Charpy notched tubes on instrumented Charpy hammer. Total impact energy, initiation energy and fracture propagation energy needed for occurrence of fracture is also elaborated.
Key words:

Keywords

structural steel; quenched; hardness; impact energy; cooling time Δt8/5

Hrčak ID:

128973

URI

https://hrcak.srce.hr/128973

Publication date:

1.4.2015.

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