Original scientific paper

Identification of low cycle fatigue parameters of high strength low-alloy (HSLA) steel at room temperature

S. Bulatović ; Yugoslav River Shipping, Serbia
Lj. Milović ; University of Belgrade, Faculty of Technology and Metallurgy, Serbia
A. Sedmak ; University of Belgrade, Faculty of Mechanical Engineering, Serbia
I. Samardžić ; University of Osijek, Mechanical Engineering Faculty, Slavonski Brod, Croatia

Abstract

Low cycle fatigue test was performed in ambient atmosphere at room temperature. Cycle loading of material, in case of High strength low-alloy steel, entails modifications of its properties and in this paper is therefore shown behavior of fatigue life using low cycle fatigue parameters. More precisely, crack initiation life of tested specimens was computed using theory of Coffin-Manson relation during the fatigue loading. The geometry of the stabilized hysteresis loop of welded joint HSLA steel, marked as Nionikral 70, is also analyzed. This stabilized hysteresis loop is very important for determination of materials properties.

Keywords

HSLA steel; mechanical properties; low cycle fatigue; fatigue life; material parameters

Hrčak ID:

122164

URI

https://hrcak.srce.hr/122164

Publication date:

1.10.2014.

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