Microstructural Aspects of Bifocal Laser Welding of TRIP Steels

• Autorzy: Grajcar A. , Grzegorczyk B. , Różański M. , Stano S. , Morawiec M.

Identyfikatory

DOI

10.1515/amm-2017-0090

• Języki publikacji: EN

Abstrakty

EN

This work is concerned with comparative tests involving single-spot and twin-spot laser welding of thermomechanically rolled TRIP steel. The welding tests were carried out using keyhole welding and a solid state laser. In the case of twin-spot laser beam welding, the power distribution of beams was 50%:50%. The changes in macro- and microstructures were investigated using light and scanning electron microscopy. Three main zones subjected to the tests included the fusion zone, the heat affected zone and the intercritical heat affected zone (transition zone between the base material and the HAZ). Special attention was paid to the effect of various thermal cycles on the microstructure of each zone and on martensite morphology. The tests involved hardness measurements carried out in order to investigate the effect of different microstructures on mechanical properties of welds.

Słowa kluczowe

EN

TRIP steel; retained austenite; dual beam; laser welding; AHSS; hardness profile

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2A
• Strony: 611--618
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Grajcar A.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44-100 Gliwice, Poland

autor

Grzegorczyk B.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44-100 Gliwice, Poland

autor

Różański M.

• Institute of Welding, 16-18 Bl. Czeslawa Str., 44-100 Gliwice, Poland

autor

Stano S.

• Institute of Welding, 16-18 Bl. Czeslawa Str., 44-100 Gliwice, Poland

autor

Morawiec M.

• Silesian University of Technology, Institute of Engineering Materials and Biomaterials, 18a Konarskiego Str., 44-100 Gliwice, Poland

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).