Processing window and evaporation phenomena for Ti–6Al–4V produced by selective electron beam melting

Abstract Additive manufacturing by selective electron beam melting is a promising way to fabricate complex Ti–6Al–4V components. Sound parts can be realized by applying quite different processing strategies, which have an influence not only on processing time but also on the microstructure and the alloy composition. In this work, the processing window for Ti–6Al–4V is determined for a wide range of scanning speeds and line energies. The influence of the energy input on the resulting heat-affected zone and alloy composition is discussed.

[1]  Y. Mishin,et al.  Intrinsic self-diffusion and substitutional Al diffusion in α-Ti , 1997 .

[2]  Robert F. Singer,et al.  Cellular Titanium by Selective Electron Beam Melting , 2007 .

[3]  U. Ackelid,et al.  Additive Manufacturing of Dense Metal Parts by Electron Beam Melting , 2009 .

[4]  S. S. Al-Bermani,et al.  The Origin of Microstructural Diversity, Texture, and Mechanical Properties in Electron Beam Melted Ti-6Al-4V , 2010 .

[5]  J. C. Jaeger,et al.  Conduction of Heat in Solids , 1952 .

[6]  M. Donachie.  Titanium: A Technical Guide , 1988 .

[7]  J. Kruth,et al.  A study of the microstructural evolution during selective laser melting of Ti–6Al–4V , 2010 .

[8]  Luca Facchini,et al.  Microstructure and mechanical properties of Ti‐6Al‐4V produced by electron beam melting of pre‐alloyed powders , 2009 .

[9]  Radovan Kovacevic,et al.  Evaluation of titanium alloy fabricated using electron beam melting system for dental applications , 2011 .

[10]  L. Murr,et al.  Microstructure and mechanical behavior of Ti-6Al-4V produced by rapid-layer manufacturing, for biomedical applications. , 2009, Journal of the mechanical behavior of biomedical materials.

[11]  John J. Hurly,et al.  Thermophysical Properties of Gaseous CF4 and C2F6 from Speed-of-Sound Measurements , 1999 .

[12]  L. Murr,et al.  Microstructure and mechanical properties of open-cellular biomaterials prototypes for total knee replacement implants fabricated by electron beam melting. , 2011, Journal of the mechanical behavior of biomedical materials.