Effect of dual beam laser welding on microstructure–property relationships of hot-rolled complex phase steel sheets

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

Identyfikatory

DOI

10.1016/j.acme.2016.09.007

• Języki publikacji: EN

Abstrakty

EN

The work addresses microstructure–property relationships of hot-rolled complex phase steel sheets subjected to various conditions of dual beam laser welding. The article also contains a comparison between single-spot and twin-spot laser welding. Test-related joints were made using a Yb:YAG disc laser having a maximum power of 12 kW and a welding head enabling the focusing of a laser beam on two spots. The tests involved investigating the effect of power distribution on the macrostructure, microstructure and mechanical properties of joints. Microscopic investigations revealed the stabilisation of some fraction of retained austenite in the intercritical heat affected zone (ICHAZ) of joints. The application of the second beam resulted in tempering-like effects in the martensite of the fusion zone and in the HAZ, favourably reducing the hardness of the joint. The use of bifocal welding enabled the obtainment of a 10% hardness reduction in the fusion zone as against single-spot laser beam welding.

Słowa kluczowe

EN

hot-rolled steel sheets; dual beam laser welding; complex phase steel; weldability; hardness reduction

PL

blacha stalowa; walcowanie na gorąco; spawalność

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 17, no. 1
• Strony: 145--153
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wykr.

Twórcy

autor

Morawiec M.

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

autor

Różański M.

• Institute of Welding, 16-18 Bl. Czesława Street, 44-100 Gliwice, Poland

autor

Grajcar A.

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

autor

Stano S.

• Institute of Welding, 16-18 Bl. Czesława Street, 44-100 Gliwice, Poland

Bibliografia

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Uwagi

PL

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