Developing New Materials for Electron Beam Melting: Experiences and Challenges

Abstract:

Lack of industrially available materials for additive manufacturing (AM) of metallic materials along with the promises of materials with improved or unique properties provides a strong drive for developing new process/material combinations. As powder bed technologies for metallic materials are relatively new to the market, and to some extent are only maturing, developers of new process/material combinations have certain challenges to overcome. Firstly, basic knowledge on the behavior of materials (even those well established for other applications) under extreme conditions of melting/solidification with beam-based AM methods is far from being adequate. Secondly, manufacturing of the equipment is up to date driven by industrial application, thus optimization of the AM machines for small test batches of powders is still belongs to research and development projects. Also, majority of the powder manufacturers are primarily driven by the market development, and even they are well aware of the demands imposed by the powder bed AM machines, availability of small test batches of adequate powders may be problematic or at least quite costly for the R&D oriented users. Present paper describes the experiences in developing new materials for EBM A2 machine by Arcam EBM, modified for operating with powder batches of 100-200 ml and less. In particular it discusses achievements and challenges of working with powders from different materials with specifications far beyond the range suggested by machine manufacturer. Also it discusses the possibility of using blended rather than pre-alloyed powders for achieving both composite-like and alloyed materials in the same part by steering electron beam energy deposition strategy.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 2190-2195
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.2190
• Online since: December 2018
• Authors: Andrey Koptyug*, Mikael Bäckström, Carlos Botero, Vladimir Popov, Ekaterina Chudinova
• Keywords: Additive Manufacturing (AM), Blended Powders, Composite Material, Electron Beam Melting, In Situ Alloying, Material Development

References

[1] W.J. Sames, F.A. List, S. Pannala, R.R. Dehoff, S.S. Babu, The metallurgy and processing science of metal additive manufacturing, International Materials, 61 (2016), 315-360.

DOI: 10.1080/09506608.2015.1116649

[2] A. Koptyug, L.-E. Rännar, M. Bäckström, R. Surmenev, Additive manufacturing in metal: technology advances generate new research challenges, Nanotechnologies: development and applications, XXI century, 8 (2016) 12-25.

[3] A. Koptyug, L.-E. Rännar, M. Bäckström, A. Langlet, Bulk Metallic Glass Manufacturing Using Electron Beam Melting, In: Proceedings of the International Conference on Additive Manufacturing & 3D Printing, Nottingham, July 9-10, (2013).

[4] P. Drescher, H. Seitz, Processability of an amorphous metal alloy powder by electron beam melting, RTeJournal - Fachforum für Rapid Technologie, Vol. 2015, https://www.rtejournal.de/ ausgabe12/4236.

[5] L.-E. Rännar, A. Koptyug, J. Olsen, K. Saedi, J. Shen, Hierarchical structures of stainless steel 316L manufactured by Electron Beam Melting, Additive Manufacturing, Additive Manufacturing, 17 (2017) 106-112.

DOI: 10.1016/j.addma.2017.07.003

[6] Y. Zhong, L.-E. Rännar, S. Wikman, A. Koptyug, Additive manufacturing of ITER first wall panel parts by two approaches: Selective laser melting and electron beam melting, Fusion engineering and design, 116 (2017) 24-33.

DOI: 10.1016/j.fusengdes.2017.01.032

[7] Y.M. Wang, T. Voisin, J.T. McKeown, J. Ye, N.P. Calta, Z. Li, Z. Zeng, Yi. Zhang, W. Chen, T. Tran Roehling, R.T. Ott, M.K. Santala, P.J. Depond, M.J. Matthews, A.V. Hamza, T. Zhu, Additively manufactured hierarchical stainless steels with high strength and ductility, Nature Materials volume 17 (2018) 63–71.

DOI: 10.1038/nmat5021

[8] F. Yan, W. Xiong, E.J. Faierson, Grain Structure Control of Additively Manufactured Metallic Materials, Materials, 10 (2017) 1260.

DOI: 10.3390/ma10111260

[9] S.P. Narraa, R. Cunninghamb, J. Beutha, A.D. Rollett, Location specific solidification microstructure control in electron beam melting of Ti-6Al-4, Additive Manufacturing 19 (2018) 160–166.

DOI: 10.1016/j.addma.2017.10.003

[10] R.R. Dehoff, M.M. Kirka, W.J. Sames, H. Bilheux, A.S. Tremsin, L.E. Lowel, S.S. Babu, Site specific control of crystallographic grain orientation through electron beam additive manufacturing, Materials Science and Technology 31 (2015) 931-938.

DOI: 10.1179/1743284714y.0000000734

[11] T.T. Roehling, Sh.S.Q. Wu, S.A. Khairallah, J.D. Roehling, S.S. Soezeri, M.F. Crumb, M.J. Matthews, Modulating laser intensity profile ellipticity for microstructural control during metal additive manufacturing, Acta Materialia 128 (2017) 197e206.

DOI: 10.1016/j.actamat.2017.02.025

[12] M. Fischer, D. Joguet, G. Robin, L. Peltier, P. Laheurte, In situ elaboration of a binary Ti–26Nb alloy by selective laser melting of elemental titanium and niobium mixed powders, Materials Science and Engineering C 62 (2016) 852–859.

DOI: 10.1016/j.msec.2016.02.033

[13] S.L. Sing, W.Y. Yeong, F.E. Wiria, Selective laser melting of titanium alloy with 50 wt% tantalum: Microstructure and mechanical properties, Journal of Alloys and Compounds 660 (2016) 461e470.

DOI: 10.1016/j.jallcom.2015.11.141

[14] S. Szemkusa, B. Kempf, S. Jahna, G. Wiehl, F. Heringhaus, M. Rettenmayr, Laser additive manufacturing of contact materials, Journal of Materials Processing Tech. 252 (2018) 612–617.

DOI: 10.1016/j.jmatprotec.2017.09.023

[15] P. Vora, F. Derguti, K.A. Mumtaz, I. Todd, N. Hopkinson, Processing technique using metal powder bed Additive Manufacturing Processes. In: Proceedings Solid Freeform Fabrication Symposium. Solid Freeform Fabrication Symposium, 05-07 Aug 2013, Austin Texas, USA, 454-462.

DOI: 10.32656/2018_29sff_symposium

[16] P.K. Farayibi, J. Folkes, A. Clare, O. Oyelola, Cladding of pre-blended Ti–6Al–4V and WC powder for wear resistant applications, Surface & Coatings Technology 206 (2011) 372–377.

DOI: 10.1016/j.surfcoat.2011.07.033

[17] H. Peng, C. Liu , H. Guo, Y. Yuan, S. Gong, H. Xu, Fabrication of WCp/NiBSi metal matrix composite by electron beam melting, Materials Science & Engineering A 666 (2016) 320–323.

DOI: 10.1016/j.msea.2016.04.079

[18] A. Reichardt, R.P. Dillon, J.P. Borgonia, A.A. Shapiro, B.W. McEnerney, T. Momose, P. Hosemann, Development and characterization of Ti-6Al-4V to 304L stainless steel gradient components fabricated with laser deposition additive manufacturing, Materials and Design 104 (2016) 404–413.

DOI: 10.1016/j.matdes.2016.05.016