Original scientific paper

Behaviour of coarse grain heat affected zone (HAZ) during cycle loading

T. Vuherer ; University of Maribor, Faculty of Mechanical Engineering, Slovenia
P. Maruschak ; Ternopil State Ivan Plu’uj University, Department of Material Science, Ukraine
I. Samardžić ; University of Osijek, Mechanical Engineering Faculty, Slavonski Brod, Croatia

Abstract

This paper presents results of a study on martensitic coarse grain heat affected zone that can appear in welded joints. Mechanical properties of martensitic coarse grain heat affected zone and its microstructure were investigated. Special attention was given to its behaviour during the cycle loading under stress concentration. Stress concentration was similar to the one in real welds. The S-N curve and the fatigue limit were determined. The Paris curve and the threshold for crack propagating were also determined.

Keywords

weld; coarse grain HAZ; microstructure; mechanical properties; fatigue limit, Paris curve

Hrčak ID:

80847

URI

https://hrcak.srce.hr/80847

Publication date:

1.7.2012.

Article data in other languages: croatian

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