Technical gazette, Vol. 24 No. 5, 2017.
Original scientific paper
https://doi.org/10.17559/TV-20160908131618
Fatigue properties of weld joint of steel sheets treated by PLASOX process
Jozef Bárta
orcid.org/0000-0003-0607-4433
; Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Paulínska 16, 917 24 Trnava, Slovakia
Milan Marônek
orcid.org/0000-0002-4716-8092
; Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Paulínska 16, 917 24 Trnava, Slovakia
Jaroslav Jančár
; Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Paulínska 16, 917 24 Trnava, Slovakia
Peter Krampoťák
; Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Paulínska 16, 917 24 Trnava, Slovakia
František Nový
; The University of Žilina, Faculty of Mechanical Engineering, Univerzitná 1, 010 26 Žilina, Slovakia
Ivan Samardžić
; J. J. Strossmayer University of Osijek, Faculty of Mechanical Engineering Slavonski Brod, Trg Ivane Brlić Mažuranić 2, 35000 Slavonski Brod, Croatia
Abstract
The paper deals with the fatigue properties of weld joints of thin steel sheets DC01 as well as the fatigue properties of weld joints of steel sheets DC01 treated by the PLASOX process, which is patented by RÜBIG company. Fatigue properties of these steel sheets were consequently confronted with the fatigue properties of these materials without weld. Steel sheets were welded by fibre laser TruFiber 400. Fatigue life tests were carried out under bending load with frequency of 20 kHz on ultrasonic fatigue machine KAUP-ZU. On the fractured surfaces the fractographic analysis was carried out to determine the mechanism of rupture. The results proved that plasma nitrooxidation by PLASOX process had a positive effect on fatigue life of weld joints.
Keywords
fatigue properties; laser welding; plasma nitrooxidation
Hrčak ID:
188234
URI
Publication date:
25.10.2017.
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