Fatigue behaviour of L-DED processed Ti-6Al-4V with microstructures refined by trace boron addition
Source abstract
Abstract
Boron is a powerful grain solute that promotes substantial microstructural refinement in titanium alloys produced by additive manufacturing. However, the fatigue performance of boron refined additive manufactured titanium alloys remained unknown. In this study, a thorough investigation into the high-cycle fatigue life and crack propagation rates of laser direct energy deposited Ti-6Al-4V with a trace boron addition was carried out. The high-cycle fatigue life was significantly improved, as the refined microstructure increased the crack initiation resistance. However, the crack propagation resistance estimated from spectrum loading was reduced, due to the refined prior-β grains and TiB particles.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Titanium Alloys Microstructure and Properties · High Entropy Alloys Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (59)
Show source-provided references
1. Metallurgy, mechanistic models and machine learning in metal printing10.1038/s41578-020-00236-1 ↗
2. Lütjering G, Williams JC. Titanium. 2nd edn. Vol. 53. Springer Berlin Heidelberg; 2007. doi: 10.1017/CBO9781107415324.004.10.1017/CBO9781107415324.004 ↗
3. The influence of building direction on the fatigue crack propagation behavior of Ti6Al4V alloy produced by selective laser melting10.1016/j.msea.2019.138409 ↗
4. Anisotropic tensile behavior of Ti-6Al-4V components fabricated with directed energy deposition additive manufacturing10.1016/j.actamat.2014.12.054 ↗
5. Effects of boron addition on microstructures and mechanical properties of Ti-6Al-4V manufactured by direct laser deposition10.1016/j.matdes.2019.108191 ↗
6. Grain boundary α-phase precipitation and coarsening: comparing laser powder bed fusion with as-cast Ti-6Al-4V10.1016/j.scriptamat.2021.114261 ↗
7. Effects of post heat treatments on microstructures and mechanical properties of selective laser melted Ti6Al4V alloy10.3390/met11101593 ↗
8. Isotropic and improved tensile properties of Ti-6Al-4V achieved by in-situ rolling in direct energy deposition
9. Effects of the morphology of grain boundary α-phase on the anisotropic deformation behaviors of additive manufactured Ti–6Al–4V10.1016/j.matdes.2022.111150 ↗
10. Microstructural optimization through heat treatment for enhancing the fracture toughness and fatigue crack growth resistance of selective laser melted Ti–6Al–4V alloy10.1016/j.actamat.2019.03.003 ↗
11. Anisotropy of fatigue crack growth in wire arc additive manufactured Ti-6Al-4V10.1016/j.msea.2017.10.064 ↗
12. Effect of microstructure on fatigue crack growth of wire arc additive manufactured Ti–6Al–4V10.1016/j.msea.2021.141942 ↗
13. On brittle fracture of two-dimensional lattices with material anisotropies10.1111/ffe.13711 ↗
14. Multiple α sub-variants and anisotropic mechanical properties of an additively-manufactured Ti-6Al-4V alloy10.1016/j.jmst.2020.06.039 ↗
15. Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: a critical review10.1016/j.matdes.2017.11.021 ↗
16. Fatigue crack growth behavior and microstructural mechanisms in Ti-6Al-4V manufactured by laser engineered net shaping10.1016/j.ijfatigue.2016.08.009 ↗
17. Tensile and fatigue crack growth behavior of commercially pure titanium produced by laser powder bed fusion additive manufacturing
18. Fatigue crack growth for through and part-through cracks in additively manufactured Ti6Al4V10.1016/j.ijfatigue.2021.106608 ↗
19. Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti-6Al-4V10.1016/S0013-7944(00)00099-0 ↗
20. Evaluation on tensile and fatigue crack growth performances of Ti6Al4V alloy produced by selective laser melting
21. Micro-and meso-structures and their influence on mechanical properties of selectively laser melted Ti-6Al-4V10.1016/j.actamat.2018.05.044 ↗
22. Crack propagation and fracture toughness of Ti6Al4V alloy produced by selective laser melting
23. Fatigue performance differences between rolled and selective laser melted Ti6Al4V alloys10.1016/j.matchar.2022.111963 ↗
24. Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti-6Al-4V10.1016/j.msea.2014.07.086 ↗
25. Influence of macrozones on the fatigue cracking behavior and fracture mechanisms of rolled Ti–6Al–4V alloy10.1016/j.msea.2021.141824 ↗
26. Effect of microtexture on short crack propagation in two-phase titanium alloys10.1016/j.ijfatigue.2017.07.022 ↗
27. A generalized criterion for fatigue crack growth in additively manufactured materials – build orientation and geometry effects10.1016/j.ijfatigue.2020.106099 ↗
28. Towards β-fleck defect free additively manufactured titanium alloys by promoting the columnar to equiaxed transition and grain refinement10.1016/j.actamat.2021.117511 ↗
29. Grain refinement of wire arc additively manufactured titanium by the addition of silicon10.1016/j.jallcom.2016.11.049 ↗
30. Reprint: boron modified titanium alloys10.1016/j.pmatsci.2021.100815 ↗
31. A model of grain refinement incorporating alloy constitution and potency of heterogeneous nucleant particles10.1016/S1359-6454(00)00368-2 ↗
32. The interdependence theory: the relationship between grain formation and nucleant selection10.1016/j.actamat.2011.04.035 ↗
33. Grain refinement of cast titanium alloys via trace boron addition10.1016/j.scriptamat.2005.08.020 ↗
34. Selective laser melting of in situ titanium-titanium boride composites: Processing, microstructure and mechanical properties10.1016/j.actamat.2014.05.022 ↗
35. Metallurgical features of direct laser-deposited Ti6Al4V with trace boron10.1016/j.jmapro.2018.09.018 ↗
36. Influence of trace boron addition on microstructure, tensile properties and their anisotropy of Ti6Al4V fabricated by laser directed energy deposition10.1016/j.matdes.2019.107943 ↗
37. On characterization of deformation microstructure in Boron modified Ti-6Al-4V alloy10.1016/j.msea.2010.09.026 ↗
38. Microstructural effects on the mechanical behavior of B-modified Ti–6Al–4V alloys10.1016/j.actamat.2007.05.009 ↗
39. Molaei R, Fatemi A, Sanaei N, Pegues J, Shamsaei N, Shao S, et al. Fatigue of additive manufactured Ti-6Al-4V, part II: the relationship between microstructure, material cyclic properties, and component performance. Int J Fatigue 2020;132:105363. doi: 10.1016/j.ijfatigue.2019.105363.10.1016/j.ijfatigue.2019.105363 ↗
40. Influence of deposition strategy on the microstructure and fatigue properties of laser metal deposited Ti-6Al-4V powder on Ti-6Al-4V substrate10.1016/j.ijfatigue.2019.105236 ↗
41. Mechanical properties of laser-deposited Ti-6Al-4V
42. High cycle fatigue properties of a minor boron-modified Ti6Al4V alloy10.2320/matertrans.M2012104 ↗
43. Fatigue in Ti-6Al-4V-B alloys10.1016/j.actamat.2010.09.008 ↗
44. Fatigue crack growth rates in alpha titanium: Faceted vs. striation growth10.1016/j.scriptamat.2012.10.041 ↗
45. Marker load-aided bidirectional fatigue crack growth rate measurement via a semi-elliptical surface crack10.1016/j.ijfatigue.2018.02.010 ↗
46. Observations of crack path changes caused by periodic underloads in AA7050-T745110.1016/j.ijfatigue.2007.08.021 ↗
47. Intra-layer closed-loop control of build plan during directed energy additive manufacturing of Ti-6Al-4V
48. Microtexture in additively manufactured Ti-6Al-4V fabricated using directed energy deposition10.1016/j.msea.2018.07.098 ↗
49. Role of geometry on properties of additively manufactured Ti-6Al-4V structures fabricated using laser based directed energy deposition10.1016/j.matdes.2016.05.045 ↗
50. Impact of hot isostatic pressing on the mechanical and microstructural properties of additively manufactured Ti–6Al–4V fabricated using directed energy deposition10.1016/j.msea.2020.139454 ↗
51. Optimising the mechanical properties of Ti-6Al-4V components produced by wire + arc additive manufacturing with post-process heat treatments10.1016/j.jallcom.2018.04.158 ↗
52. In situ tailoring microstructure in additively manufactured Ti-6Al-4V for superior mechanical performance10.1016/j.actamat.2016.12.027 ↗
53. Additive manufacturing of strong and ductile Ti-6Al-4V by selective laser melting via in situ martensite decomposition10.1016/j.actamat.2014.11.028 ↗
54. Firm K, Boyer R, Welsch G. Materials properties handbook: titanium alloys. ASM Int Mater Park OH 1994:xxii 1176.
55. Effect of build thickness and geometry on quasi-static and fatigue behavior of Ti-6Al-4V produced by Electron Beam Melting
56. Fatigue crack initiation in as forged Ti–6Al–4V bars with macrozones present10.1016/j.ijfatigue.2015.05.020 ↗
57. The HCF behavior and life variability of a Ti-6Al-4V alloy with transverse texture10.1016/j.ijfatigue.2016.12.030 ↗
58. Effect of the presence of macrozones on short crack propagation in forged two-phase titanium alloys10.1016/j.ijfatigue.2017.07.002 ↗
59. Krupp U. Fatigue crack propagation in metals and alloys. Wiley-VCH Verlag GmbH & Co. KGaA; 2007. doi: 10.1002/9783527610686.10.1002/9783527610686 ↗