Microstructure of Laser Treated ZE41A-T5 Magnesium Alloy

Yvonne Durandet; S. Sun; M. Brandt

doi:10.4028/www.scientific.net/MSF.654-656.759

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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Microstructure of Laser Treated ZE41A-T5 Magnesium...

Microstructure of Laser Treated ZE41A-T5 Magnesium Alloy

Abstract:

Modification of the microstructure of ZE41A-T5 magnesium alloy substrates was investigated by laser surface re-melting and solidification using a 2.5 kW Nd:YAG laser. The effects of laser power, high scan rate and beam configuration were examined. The microstructure of laser treated ZE41 consisted of small precipitates dispersed in a fine dendritic α-magnesium matrix at high scan rates. The redistribution of chemical elements depended mainly on the dwell time in the liquid stage. At high scan rates, long dwell times were achieved by splitting the laser beam into two spots trailing in the scan direction which resulted in a more homogenous distribution of Mg, Zn and Zr. Cracking due to thermal shrinkage during solidification was prevented by reducing the temperature of the melt pool. This was achieved by lowering the laser power, increasing the scan rate and laser spot size. Increasing the laser spot size in the scan direction was conducive to producing homogeneous microstructures without cracks.

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Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

759-762

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.759

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Online since:

June 2010

Authors:

Yvonne Durandet, S. Sun, M. Brandt

Keywords:

Corrosion, Crack, Laser, Magnesium, Microstructure, Surface Modification, ZE41 Alloy

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References

[1] J. C. Ion, Laser processing of engineering materials, Elsevier, Oxford, (2005).

Google Scholar

[2] P. Hagans, C. Langhoff, D. Moll, D. Perettie, R. Yates: Proceedings of SPIE. (The International Society for Optical Engineering, 1984), pp.103-107.

Google Scholar

[3] Z. Liu, P. H. Chong, P. Skeldon, P. A. Hilton, J. T. Spencer: ICALEO. (LIA, 2004), pp.31-39.

Google Scholar

[4] Y. Durandet, M. Brandt, Q. Liu, Materials Forum 29 (2005) 136-142.

Google Scholar

[5] G. l. Makar, J. Kruger, Journal of the Electrochemical Society 137 (1990) 414-421.

Google Scholar

[6] G. Abbas, Z. Liu, P. Skeldon, Applied Surface Science 247 (2005) 347-353.

Google Scholar

[7] A. Koutsomichalis, L. Saettas, H. Badekas, Journal of Materials Science 29 (1994) 65436547.

Google Scholar

[8] J. Dutta Majumdar, R. Galun, B. L. Mordike, I. Manna, Materials Science and Engineering A 361 (2003) 119-129.

DOI: 10.1016/s0921-5093(03)00519-7

Google Scholar

[9] R. K. Singh Raman, S. Murray, M. Brandt, Surface Engineering 23 (2007) 107-111.

Google Scholar

[10] D. Schippman, A. Weisheit, B. l. Mordike, Surface Engineering 15 (1999) 23-26.

Google Scholar

[11] P. C. Banerjee, R. K. S. Raman, Y. Durandet, G. McAdam, Materials Science Forum 618 619 (2009) 263-268.

Google Scholar

[12] M. C. Zhao, M. Liu, G. L. Song, A. Atrens, Advanced Engineering Materials 10 (2008) 104111.

Google Scholar

[13] M. C. Zhao, M. Liu, G. Song, A. Atrens, Corrosion Science 50 (2008) 1939-(1953).

Google Scholar

[14] Z. Shi, G. Song, A. Atrens, Corrosion Science 47 (2005) 2760-2777.

Google Scholar

[15] X. Cao, M. Jahazi, J. P. Immarigeon, W. Wallace, Journal of Materials Processing Technology 171 (2006) 188-204.

Google Scholar