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Effect of Laser Power on Mechanical and Microstructure Properties of Pulsed Nd:YAG Laser Welded Dissimilar DP600-DP1000 Steel Sheets

Year 2020, Volume: 4 Issue: 1, 41 - 46, 20.03.2020
https://doi.org/10.26701/ems.632173

Abstract

In the present study, dissimilar dual-phase
(DP) steel sheets (DP600-DP1000) were double-sided welded with Nd:YAG
(Neodymium-doped Yttrium Aluminum Garnet (Y3Al5O12)) laser device and the
effect of laser power on mechanical and microstructural properties of welded
sheets was investigated. Laser welds were conducted using SISMA SWA300 Nd:YAG
laser welding machine in the flat position with the butt joint. DP600 and
DP1000 steels with a 1 mm thickness were selected for the experiments. Laser
power was changed from 20% to 75%, and other welding parameters were kept
constant. To evaluate the welded samples, tensile, microhardness and optical
microscope tests were performed. As a result of the study, in high laser power
values, good quality welds were obtained. In microstructural studies, it was
observed that three different regions were formed in the weld section; fusion
zone (FZ), heat affected zone (HAZ) and base material (BM). These three regions
were composed of different phase structures; FZ: martensite, bainite and
retained austenite, HAZ: martensite, bainite, ferrite, retained austenite and
tempered martensite, BM: ferrite and martensite. Also, different hardness
values were measured in these different regions, particularly in the FZ highest
microhardness values were measured due to effective martensite formation.

Supporting Institution

Bursa Uludağ Üniversitesi Bilimsel Araştırma Projeleri Birimi

Project Number

HDP (MH) 2017/47

Thanks

This study is supported by the Scientific Research Fund (BAP) of Uludag University

References

  • [1] Ghadbeigi, H., Pinna, C., Celotto, S., Yates, J.R., (2010). Local plastic strain evolution in a high strength dual-phase steel. Materials Science and Engineering A 527(18–19): 5026–32, Doi: 10.1016/j.msea.2010.04.052.
  • [2] Ghassemi-Armaki, H., Maaß, R., Bhat, S.P., Sriram, S., Greer, J.R., Kumar, K.S., (2014). Deformation response of ferrite and martensite in a dual-phase steel. Acta Materialia 62(1): 197–211, Doi: 10.1016/j.actamat.2013.10.001.
  • [3] Dong, D., Liu, Y., Yang, Y., Li, J., Ma, M., Jiang, T., (2014). Microstructure and dynamic tensile behavior of DP600 dual phase steel joint by laser welding. Materials Science and Engineering A 594: 17–25, Doi: 10.1016/j.msea.2013.11.047.
  • [4] Torkamany, M.J., Malek Ghaini, F., Poursalehi, R., (2014). Dissimilar pulsed Nd: YAG laser welding of pure niobium to Ti-6Al-4V. Materials and Design 53: 915–20, Doi: 10.1016/j.matdes.2013.07.094.
  • [5] Hazratinezhad, M., Mostafa Arab, N.B., Sufizadeh, A.R., Torkamany, M.J., (2012). Mechanical and metallurgical properties of pulsed neodymium-doped yttrium aluminum garnet laser welding of dual phase steels. Materials and Design 33(1): 83–7, Doi: 10.1016/j.matdes.2011.06.070.
  • [6] Xue, X., Pereira, A., Amorim, J., Liao, J., (2017). Effects of Pulsed Nd:YAG Laser Welding Parameters on Penetration and Microstructure Characterization of a DP1000 Steel Butt Joint. Metals 7(8): 292, Doi: 10.3390/met7080292.
  • [7] Seang, C., David, A.K., Ragneau, E., (2013). Effect of Nd:YAG laser welding parameters on the hardness of lap joint: Experimental and numerical approach. Physics Procedia 41: 38–40, Doi: 10.1016/j.phpro.2013.03.049.
  • [8] ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials, (2009)
Year 2020, Volume: 4 Issue: 1, 41 - 46, 20.03.2020
https://doi.org/10.26701/ems.632173

Abstract

Project Number

HDP (MH) 2017/47

References

  • [1] Ghadbeigi, H., Pinna, C., Celotto, S., Yates, J.R., (2010). Local plastic strain evolution in a high strength dual-phase steel. Materials Science and Engineering A 527(18–19): 5026–32, Doi: 10.1016/j.msea.2010.04.052.
  • [2] Ghassemi-Armaki, H., Maaß, R., Bhat, S.P., Sriram, S., Greer, J.R., Kumar, K.S., (2014). Deformation response of ferrite and martensite in a dual-phase steel. Acta Materialia 62(1): 197–211, Doi: 10.1016/j.actamat.2013.10.001.
  • [3] Dong, D., Liu, Y., Yang, Y., Li, J., Ma, M., Jiang, T., (2014). Microstructure and dynamic tensile behavior of DP600 dual phase steel joint by laser welding. Materials Science and Engineering A 594: 17–25, Doi: 10.1016/j.msea.2013.11.047.
  • [4] Torkamany, M.J., Malek Ghaini, F., Poursalehi, R., (2014). Dissimilar pulsed Nd: YAG laser welding of pure niobium to Ti-6Al-4V. Materials and Design 53: 915–20, Doi: 10.1016/j.matdes.2013.07.094.
  • [5] Hazratinezhad, M., Mostafa Arab, N.B., Sufizadeh, A.R., Torkamany, M.J., (2012). Mechanical and metallurgical properties of pulsed neodymium-doped yttrium aluminum garnet laser welding of dual phase steels. Materials and Design 33(1): 83–7, Doi: 10.1016/j.matdes.2011.06.070.
  • [6] Xue, X., Pereira, A., Amorim, J., Liao, J., (2017). Effects of Pulsed Nd:YAG Laser Welding Parameters on Penetration and Microstructure Characterization of a DP1000 Steel Butt Joint. Metals 7(8): 292, Doi: 10.3390/met7080292.
  • [7] Seang, C., David, A.K., Ragneau, E., (2013). Effect of Nd:YAG laser welding parameters on the hardness of lap joint: Experimental and numerical approach. Physics Procedia 41: 38–40, Doi: 10.1016/j.phpro.2013.03.049.
  • [8] ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials, (2009)
There are 8 citations in total.

Details

Primary Language English
Journal Section Research Article
Authors

Oğuz Tunçel 0000-0002-6886-6367

Hakan Aydın 0000-0001-7364-6281

Şükriye Çetin This is me 0000-0002-3888-699X

Project Number HDP (MH) 2017/47
Publication Date March 20, 2020
Acceptance Date November 19, 2019
Published in Issue Year 2020 Volume: 4 Issue: 1

Cite

APA Tunçel, O., Aydın, H., & Çetin, Ş. (2020). Effect of Laser Power on Mechanical and Microstructure Properties of Pulsed Nd:YAG Laser Welded Dissimilar DP600-DP1000 Steel Sheets. European Mechanical Science, 4(1), 41-46. https://doi.org/10.26701/ems.632173

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