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Fiber Laser Welding of Dual-Phase and Bake-Hardened Steels

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Strength of Materials Aims and scope

Microstructural changes and microhardness profiles of laser-welded dual-phase DP600 and bake-hardened 220BH steels were evaluated. The joints of these steels were butted with different welding parameters. They exhibited the microstructural changes, from ferrite and martensite in dual-phase steels or ferrite in bake-hardened steels to acicular ferrite, bainite and martensite in the fusion and heat-affected zones of the weld joints. As a result of welding, microhardness increases significantly in the fusion zones and even more in the heat-affected zones near DP600 steel.

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Acknowledgments

This study was supported by the Slovak Research and Development Agency under contract No. APVV-0281-12.

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Authors and Affiliations

  1. Slovak University of Technology, Bratislava, Slovakia

    P. Švec, A. Schrek & T. Csicsó

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  1. P. Švec
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  2. A. Schrek
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  3. T. Csicsó
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Correspondence to P. Švec.

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Translated from Problemy Prochnosti, No. 4, pp. 14 – 20, July – August, 2016.

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Švec, P., Schrek, A. & Csicsó, T. Fiber Laser Welding of Dual-Phase and Bake-Hardened Steels. Strength Mater 48, 481–486 (2016). https://doi.org/10.1007/s11223-016-9789-5

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  • DOI: https://doi.org/10.1007/s11223-016-9789-5

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