Re-solidification dynamics and microstructural analysis of laser welded aluminium: Paper presented at the Symposium “Tomographic and Radiographic Imaging with Synchrotron X-rays and Neutrons” of the MSE 2018, 26–28 September 2018, Darmstadt, Germany

B. Meylan; T. Le-Quang; M.P. Olbinado; A. Rack; S.A. Shevchik; K. Wasmer

doi:10.3139/146.111838

Published by De Gruyter December 25, 2019

Re-solidification dynamics and microstructural analysis of laser welded aluminium

Paper presented at the Symposium “Tomographic and Radiographic Imaging with Synchrotron X-rays and Neutrons” of the MSE 2018, 26–28 September 2018, Darmstadt, Germany

B. Meylan , T. Le-Quang , M.P. Olbinado , A. Rack , S.A. Shevchik and K. Wasmer

From the journal International Journal of Materials Research

https://doi.org/10.3139/146.111838

Showing a limited preview of this publication:

Abstract

In this work, we investigated the re-solidification dynamics and microstructure of aluminium AA5005 welded by fibre laser. The re-solidification process was visualized by high-speed X-ray imaging at the European Synchrotron Radiation Facility (ESRF, Grenoble, France). The final microstructure was studied by electron backscatter diffraction. The experiments were performed in both conduction and keyhole weld regimes. The results show that fine and equiaxed structure is obtained for conduction welding due to very high cooling rate. Keyhole welding also shows similar structure at the beginning of re-solidification, followed by a columnar microstructure.

Keywords: Laser welding; X-ray imaging; Microstructure

∗ Correspondence address, Dr. Kilian Wasmer, Laboratory for Advanced Materials Processing (LAMP), Swiss Federal Laboratories for Materials Science and Technology (Empa), Feuerwerkerstrasse 39, 3603 Thun, Switzerland, Tel.: +41587656271, Fax: +41587656990, E-mail: kilian.wasmer@empa.ch, Web: https://www.empa.ch/web/s204/kilian-wasmer

References

[1] S. Katayama , ed., Handbook of Laser Welding Technologies, Woodhead Publishing, 2013. 10.1016/B978-0-85709-264-9.50025-8Search in Google Scholar

[2] D.Y. You , X.D.Gao, S.Katayama: Sci. Technol. Weld. Join.19 (2014) 181–201. 10.1179/1362171813Y.0000000180Search in Google Scholar

[3] T. Le-Quang , S.A.Shevchik, B.Meylan, F. VakiliFarahani, M.Olbinado, R.Alexander, K.Wasmer: Procedia CIRP. (2018). 10.1016/j.procir.2018.08.055Search in Google Scholar

[4] K. Wasmer , T.Le-Quang, B.Meylan, M.Olbinado, A.Rack, S.A.Shevchik: Procedia CIRP. (2018). 10.1016/j.procir.2018.08.054Search in Google Scholar

[5] M. Zhang , G.Chen, Y.Zhou, S.Li: Opt. Express.21 (2013) 19997–20004. 10.1364/OE.21.019997Search in Google Scholar PubMed

[6] R. Fabbro : J. Phys. D. Appl. Phys.43 (2010) 445501. 10.1088/0022-3727/43/44/445501Search in Google Scholar

[7] B.S. Yilbas , K.Danisman, Z.Yilbas: Meas. Sci. Technol.2 (1991) 668. 10.1088/0957-0233/2/7/016Search in Google Scholar

[8] M. Courtois , M.Carin, P. LeMasson, S.Gaied, M.Balabane: J. Laser Appl.26 (2014) 42001. 10.2351/1.4886835Search in Google Scholar

[9] R. Fabbro : J. Phys. D. Appl. Phys.39 (2006) 394. 10.1088/0022-3727/39/2/023Search in Google Scholar

[10] C.-A. Gandin , M.Rappaz: Acta Metall. Mater.42 (1994) 2233–2246. 10.1016/0956-7151(94)90302-6Search in Google Scholar

[11] C. Kenel , C.Leinenbach: J. Alloys Compd.637 (2015) 242–247. 10.1016/j.jallcom.2015.03.016Search in Google Scholar

[12] J.D. Hunt : Mater. Sci. Eng.65 (1984) 75–83. 10.1016/0025-5416(84)90201-5Search in Google Scholar

[13] C. Hagenlocher , M.Sommer, F.Fetzer, R.Weber, T.Graf: Mater. Des.160 (2018) 1178–1185. 10.1016/j.matdes.2018.11.009Search in Google Scholar

Received: 2018-12-15

Accepted: 2019-06-27

Published Online: 2019-12-25

Published in Print: 2020-01-09

Re-solidification dynamics and microstructural analysis of laser welded aluminium

Paper presented at the Symposium “Tomographic and Radiographic Imaging with Synchrotron X-rays and Neutrons” of the MSE 2018, 26–28 September 2018, Darmstadt, Germany

Abstract

References

Journal and Issue

Articles in the same Issue