Effect of powder oxidation on the impact toughness of electron beam melting Ti-6Al-4V
Source abstract
Abstract
Powder quality in additive manufacturing (AM) electron beam melt (EBM) of Ti-6Al-4V components is crucial in determining the critical material properties of the end item. In this study, we report on the effect of powder oxidation on the Charpy impact energy of Ti-6Al-4V parts manufactured using EBM. In addition to oxidation, the effects on impact energy due to hot isostatic pressing (HIP), specimen orientation, and EBM process defects were also investigated. This research has shown that excessive powder oxidation (oxygen mass fraction above 0.25 % and up to 0.46 %) dramatically decreases the impact energy. It was determined that the room temperature impact energy of the parts after excessive oxidation was reduced by about seven times. We also report that HIP post-processing significantly increases the impact toughness, especially for specimens with lower or normal oxygen content. The specimen orientation effect was found to be more significant for low oxidation levels.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Metal additive manufacturing: a review10.1007/s11665-014-0958-z ↗
2. Additive manufacturing of Ti-6Al-4 V alloy components for spacecraft applications
3. Additive manufacturing technology: potential implications for US manufacturing competitiveness
4. Review on powder-based electron beam additive manufacturing technology10.1115/ISFA2012-7256 ↗
5. Gibson · 2014
6. Metal fabrication by additive manufacturing using laser and electron beam melting technologies10.1016/S1005-0302(12)60016-4 ↗
7. Fabrication of metal and alloy components by additive manufacturing: examples of 3D materials science10.1016/S2238-7854(12)70009-1 ↗
8. Effect of build geometry on the β-grain structure and texture in additive manufacture of Ti6Al4 V by selective electron beam melting10.1016/j.matchar.2013.07.012 ↗
9. Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti-6Al-4V10.1016/j.msea.2014.07.086 ↗
10. Processing window and evaporation phenomena for Ti–6Al–4 V produced by selective electron beam melting10.1016/j.actamat.2014.05.037 ↗
11. Characterization and comparison of materials produced by electron beam melting (EBM) of two different Ti-6Al-4V powder fractions10.1016/j.jmatprotec.2013.06.010 ↗
12. Analysis of defect generation in Ti-6Al-4V parts made using powder bed fusion additive manufacturing processes
13. Mission assurance for additive manufacturing of metal parts
14. The origin of microstructural diversity texture, and mechanical properties in electron beam melted Ti-6Al-4V10.1007/s11661-010-0397-x ↗
15. Effects of processing on microstructure and mechanical properties of a titanium alloy (Ti-6Al-4V) fabricated using electron beam melting (EBM), part 1: Distance from build plate and part size10.1016/j.msea.2013.02.064 ↗
16. Effects of processing on microstructure and mechanical properties of a titanium alloy (Ti-6Al-4V) fabricated using electron beam melting (EBM), part 2: Energy input orientation, and location10.1016/j.msea.2013.02.065 ↗
17. Materials characterization of electron beam melted Ti-6Al-4V10.1002/9781119296126.ch242 ↗
18. Critical assessment of the fatigue performance of additively manufactured Ti?6Al?4 V and perspective for future research10.1016/j.ijfatigue.2015.12.003 ↗
19. Electron beam additive manufacturing of titanium components: properties and performance10.1115/1.4025773 ↗
20. Fatigue life of titanium alloys fabricated by additive layer manufacturing techniques for dental implants10.1007/s11661-012-1470-4 ↗
21. Effect of powder reuse times on additive manufacturing of Ti-6Al-4V by selective electron beam melting10.1007/s11837-015-1300-4 ↗
22. A transmission electron microscopy and three-dimensional atom probe study of the oxygen-induced fine microstructural features in as-sintered Ti–6Al–4V and their impacts on ductility10.1016/j.actamat.2014.01.015 ↗
23. Microstructure and mechanical properties of hot isostatically pressed Ti–6Al–4V alloy10.1016/j.jallcom.2014.03.022 ↗
24. Three-dimensional mathematical analysis of particle shape using x-ray tomography and spherical harmonics: application to aggregates used in concrete10.1016/S0008-8846(02)00836-0 ↗
25. 3D analytical mathematical models of random star-shape particles via a combination of X-ray computed microtomography and spherical harmonic analysis10.1016/j.apt.2016.10.014 ↗
26. SRM 660 · 1989
27. Oxidation of titanium in the temperature range 800–1200C10.1016/0022-5088(61)90001-7 ↗
28. Oxidation and oxygen diffusion in Ti–6Al–4V alloy: improving measurements during sims analysis by rotating the sample10.1007/s11085-013-9360-8 ↗
29. Effect of interstitial solutes on the strength and ductility of titanium10.1016/0079-6425(81)90001-3 ↗
30. Thermal oxidation of titanium by water vapour10.1016/S0167-2738(97)00400-1 ↗
31. Surface oxidation behavior of Ti–6Al–4V manufactured by electron beam melting (EBM®)10.1016/j.jmapro.2014.08.005 ↗
32. High-Temperature oxidation and its kinetics study of Ti–Al and Ti–V alloys in air10.2320/matertrans.L-M2013840 ↗
33. The O- Ti (oxygen-titanium) system10.1007/BF02873201 ↗
34. Evaluation of microstructural development in electron beam melted Ti-6Al-4V10.1016/j.matchar.2011.12.008 ↗
35. Additive layered manufacturing of reticulated Ti-6Al-4V biomedical mesh structures by electron beam melting
36. Microstructure and mechanical properties of open-cellular biomaterials prototypes for total knee replacement implants fabricated by electron beam melting10.1016/j.jmbbm.2011.05.010 ↗
37. Compression fatigue behavior of Ti–6Al–4V mesh arrays fabricated by electron beam melting10.1016/j.actamat.2011.10.051 ↗
38. Compression-compression fatigue of selective electron beam melted cellular titanium (Ti-6Al-4V)10.1002/jbm.b.31901 ↗
39. Effects of the microstructure and porosity on properties of Ti-6Al-4V ELI alloy fabricated by electron beam melting (EBM)
40. XCT analysis of the influence of melt strategies on defect population in Ti–6Al–4éV components manufactured by selective electron beam melting10.1016/j.matchar.2015.02.008 ↗
41. Effects of scanning parameters on material deposition during Electron Beam Selective Melting of Ti-6Al-4V powder10.1016/j.jmatprotec.2014.11.010 ↗
42. The effectiveness of hot isostatic pressing for closing porosity in titanium parts manufactured by selective electron beam melting10.1007/s11661-016-3429-3 ↗
43. Origin of dramatic oxygen solute strengthening effect in titanium10.1126/science.1260485 ↗
44. Welsch · 1994
45. Vydehi · 2006