Mismatch effect on fatigue crack propagation limit curves of GMAW joints made of S960QL and S960TM
DOI:
https://doi.org/10.32972/dms.2020.004Keywords:
high strength steel, gas metal arc welding, mismatch, fatigue crack growth, limit curveAbstract
Welded structures cannot be produced without imperfections, cracks or crack like defects. Among the structural steels, 960 MPa strength category represents a reliable application possibility. Consumables are also available, but the behaviour of mismatch types under cyclic loading condition is not yet clear. In order to know the fatigue crack propagation resistance of 960 MPa strength category steels and their gas metal arc welded joints fatigue crack growth tests were performed. The tests results were analysed and fatigue crack propagation limit curves were determined.
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