Microstructure Characterization of AlSi10Mg Fabricated by Selective Laser Melting Process

Takashi Maeshima; Keiichiro Oh-Ishi; Hiroaki Kadoura; Masashi Hara

doi:10.4028/www.scientific.net/MSF.941.1437

Paper Titles

Precipitation Kinetics of AA6082: An Experimental and Numerical Investigation
p.1411

Microstructure and Texture of MX20 after Conventional Rolling and Rolling from Twin Rolled Cast Strip
p.1418

Simulation of Thermal Phenomena in Reverse Strip-Rolling Process
p.1424

Magnesium Twin-Roll Casting Technology for Flat and Long Products - State of the Art and Future
p.1431

Microstructure Characterization of AlSi10Mg Fabricated by Selective Laser Melting Process
p.1437

Microstructure Evolution of Ti-5Al-5V-5Mo-3Cr after Hot Deformation at Large and Moderate Strains
p.1443

Material Flow in Lap Joint of Dissimilar Metallic Foils by Friction Stir Diffusion Bonding with Micro Indentation
p.1450

Analytical Design of Superelastic Ring Springs for High Energy Dissipation
p.1457

An In Situ Observation of Slip Deformation in a Compressed Ti-Mo-Al Single Crystal
p.1463

HomeMaterials Science ForumMaterials Science Forum Vol. 941Microstructure Characterization of AlSi10Mg...

Microstructure Characterization of AlSi10Mg Fabricated by Selective Laser Melting Process

Abstract:

Multi-scale microstructure observation and three dimensional finite element thermal analysis of AlSi10Mg alloy fabricated by selective laser melting (SLM) process were demonstrated in order to understand the microstructure formation process during SLM fabrication. The unique hierarchically microstructures were observed: (1) the “fish scale” microstructure corresponding to a part of molten pool consists of columnar and equiaxed grains and (2) these grains contain a substructure of α-Al surrounded by Si particles. It is revealed that a supersaturated Si concentration due to the predicted rapid cooling rate on the order of 10⁶ oC/s. In addition, the base temperature during the fabrication increases gradually with some peak temperature of each laser path as the laser scan has proceeded on a powder layer. Although the thermal changes cause no melting of the AlSi10Mg except directly fused region by selective laser so called molten pool, those are capable of causing precipitation and/or clustering.

You might also be interested in these eBooks

View Preview

View Preview

Info:

Periodical:

Materials Science Forum (Volume 941)

Pages:

1437-1442

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.1437

Citation:

Cite this paper

Online since:

December 2018

Authors:

Takashi Maeshima*, Keiichiro Oh-Ishi, Hiroaki Kadoura, Masashi Hara

Keywords:

AlSi10Mg, Selective Laser Melting, Solute Clustering, Supersaturated Solid Solution, Texture

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] D. Herzog, V. Seyda, E. Wycsick, C. Emmelmann, Acta Mater. 117 (2016) 371-392.

Google Scholar

[2] K. Kempen, L. Thijs, J.V. Humbeeck, J.-P. Kruth, Phys. Procedia 39 (2012) 439-446.

DOI: 10.1016/j.phpro.2012.10.059

Google Scholar

[3] D. Buchbinder, H. Schleifenbaum, S. Heidrich, W. Meiners, J. Bültmann, Phys. Procedia 12 (2011) 271-278.

DOI: 10.1016/j.phpro.2011.03.035

Google Scholar

[4] F. Trevisan, F. Calignano, M. Lorusso, J. Pakkanen, A. Aversa, E.P. Ambrosio, M. Lombardi, P. Fino, D. Manfredi, materials 10 (2017) 76-99.

DOI: 10.3390/ma10010076

Google Scholar

[5] C. Li, J.F. Liu, Y.B. Guo, Z.Y. Li, Proc. of the 26th SFF Symposium (2015) pp.1166-1181.

Google Scholar

[6] L. Thijs, K. Kempen, J.-P. Kruth, J.V. Humbeeck, Acta Mater. 61 (2013) 1809-1819.

Google Scholar

[7] X.J. Wang, L.C. Zhang, M.H. Fang, T.B. Sercombe, Mater Sci. Eng. A 597 (2013) 370-375.

Google Scholar

[8] K.G. Prashanth, S. Scudino, H.J. Klauss, K.B. Surreddi, L. Löber, Z. Wang, A.K. Chaubey, U. Kühn, J. Eckert, Mater. Sci. Eng. A 590 (2014) 153-160.

DOI: 10.1016/j.msea.2013.10.023

Google Scholar

[9] W. Pei, W. Zhengying, C. Zhen, L. Junfeng, Z. Shuzhe, D. Jun, Appl. Phys. A 123 (2017) 540-545.

Google Scholar