journal article·2018-11

Surface roughness and directional fatigue behavior of as-built EBM and DMLS Ti6Al4V

G. Nicoletto, R. Konečná, M. Frkáň, E. Riva

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Abstract

Abstract The powder bed fusion PBF is used in the fabrication layer-by-layer of metallic parts directly from a CAD file. Localized powder melting is obtained by a concentrated energy source. Fatigue tests of PBF Ti6Al4V were performed on smooth specimens produced with different orientations with respect to build direction using either a laser beam system (DMLS) or an electron beam system (EBM). As-built specimen were subjected the fatigue loading to understand and quantify the influence of the surface roughness and morphology. The original results are discussed on the basis of previous studies on the same material and processes taken from the literature.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Additive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · Welding Techniques and Residual Stresses

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (25)

Show source-provided references
1. Bandyopadhyay · 2016 · 377
2. Critical assessment of the fatigue performance of additively manufactured Ti–6Al–4V and perspective for future research10.1016/j.ijfatigue.2015.12.003 ↗
3. Fatigue performance evaluation of selective laser melted Ti–6Al–4V10.1016/j.msea.2014.01.041 ↗
4. Mechanical behavior of additive manufactured, powder-bed laser-fused materials10.1016/j.msea.2015.10.068 ↗
5. Design guidelines for laser additive manufacturing of lightweight structures in TiAl6V410.2351/1.4885235 ↗
6. Consolidation phenomena in laser and powder-bed based layered manufacturing10.1016/j.cirp.2007.10.004 ↗
7. Gong H, Rafi K, Starr T, Stucker B. The effects of processing parameters on defect regularity in Ti-6Al-4V parts fabricated by selective laser melting and electron beam melting. In: 24th Annual international solid freeform fabrication symposium; 2013. p. 424–39.
8. Effects of defects in laser additive manufactured Ti–6Al–4V on fatigue properties10.1016/j.phpro.2014.08.120 ↗
9. The effect of manufacturing defects on the fatigue behavior of Ti–6Al–4V specimens fabricated using selective laser melting10.4028/www.scientific.net/AMR.891-892.1519 ↗
10. Fatigue properties of a titanium alloy (Ti–6Al–4V) fabricated via electron beam melting (EBM): effects of internal defects and residual stress
11. Improvement of fatigue resistance and ductility of TiAl6V4 processed by selective laser melting10.1016/j.jmatprotec.2015.01.025 ↗
12. Fatigue life of titanium alloys fabricated by additive layer manufacturing techniques for dental implants10.1007/s11661-012-1470-4 ↗
13. Effect of surface roughness on fatigue performance of additive manufactured Ti–6Al–4V
14. Effect of surface roughness on the fatigue life of laser additive manufactured Ti6Al4V alloy
15. Application of mechanical surface finishing processes for roughness reduction and fatigue improvement of additively manufactured10.1016/j.ijfatigue.2017.05.008 ↗
16. Fatigue behaviour of notched additive manufactured Ti6Al4V with as-built surfaces10.1016/j.ijfatigue.2017.04.009 ↗
17. Characterization and analysis of surface notches on Ti-alloy plates fabricated by additive manufacturing techniques10.1088/2051-672X/3/4/044006 ↗
18. Fatigue performance of additive manufactured TiAl6V4 using electron and laser beam melting10.1016/j.ijfatigue.2016.05.001 ↗
19. Metallographic characterization and fatigue damage initiation in Ti6Al4V alloy produced by direct metal laser sintering10.4028/www.scientific.net/MSF.891.311 ↗
20. Anisotropic high cycle fatigue behavior of Ti-6Al-4V obtained by powder bed laser fusion10.1016/j.ijfatigue.2016.04.032 ↗
21. Influence of build direction on the fatigue behaviour of Ti6Al4V alloy produced by direct metal laser sintering
22. ASTM F2924-14 · 2014
23. Juvinall · 2012 · 929
24. Directional and notch effects on the fatigue behavior of as-built DMLS Ti6Al4V10.1016/j.ijfatigue.2017.10.004 ↗
25. Nicholas · 2006