Effects of build direction on tensile and fatigue performance of selective laser melting Ti6Al4V titanium alloy
Source abstract
Abstract
Abstract Additive manufacturing Ti6Al4V titanium alloy has a great potential to be applied in aviation structural components. During additive manufacturing process, the deposition layers present because of its intrinsic features, which may affect mechanical properties of additive manufactured parts and components. In order to study the effects of build direction on tensile and fatigue performance of Ti6Al4V manufactured by the selective laser melting technique, three different build direction Ti6Al4V samples (0° sample, 45° sample, 90° sample) were designed and manufactured in this work. Tensile and fatigue tests were performed. Stress versus strain curves, S-N curves and crack growth rate curves were measured and studied. Fracture surfaces were investigated and compared with each other. It is shown that build direction can affect the fatigue performance, but has little effect on fatigue crack growth rate. The tensile and fatigue properties of the 45° sample are the best of the three build directions in this study.
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 (40)
Show source-provided references
1. Additive manufacturing of fatigue resistant materials: challenges and opportunities10.1016/j.ijfatigue.2017.01.001 ↗
2. Anisotropy of fatigue crack growth in wire arc additive manufactured Ti-6Al-4V10.1016/j.msea.2017.10.064 ↗
3. Effect of build direction on the fracture toughness and fatigue crack growth in selective laser melted Ti-6Al-4 V10.1111/ffe.12303 ↗
4. Effect of build direction on porosity and fatigue life of selective laser melted AlSi12Mg alloy10.1016/j.msea.2018.05.040 ↗
5. Fatigue and fracture properties of Ti alloys from powder-based processes – a review10.1016/j.ijfatigue.2018.08.029 ↗
6. An overview of powder granulometry on feedstock and part performance in the selective laser melting process
7. A study of the microstructural evolution during selective laser melting of Ti–6Al–4V10.1016/j.actamat.2010.02.004 ↗
8. Anisotropic tensile behavior of Ti–6Al–4V components fabricated with directed energy deposition additive manufacturing10.1016/j.actamat.2014.12.054 ↗
9. Mechanism of porosity formation and influence on mechanical properties in selective laser melting of Ti-6Al-4V parts10.1016/j.matdes.2018.06.049 ↗
10. The effects of microstructure and porosity on the competing fatigue failure mechanisms in powder metallurgy Ti-6Al-4V10.1016/j.ijfatigue.2018.07.006 ↗
11. Correlation between porosity and processing parameters in TiAl6V4 produced by selective laser melting10.1016/j.matdes.2016.05.070 ↗
12. Residual stress in SLM Ti6Al4V alloy specimens10.4028/www.scientific.net/MSF.828-829.305 ↗
13. Optimisation of process parameters to address fundamental challenges during selective laser melting of Ti-6Al-4V: a review10.1016/j.ijmachtools.2018.01.003 ↗
14. A comparative study of additive manufacturing techniques: residual stress and microstructural analysis of CLAD and WAAM printed Ti–6Al–4V components10.1016/j.matdes.2015.09.115 ↗
15. In-situ residual stress reduction, martensitic decomposition and mechanical properties enhancement through high temperature powder bed pre-heating of Selective Laser Melted Ti6Al4V10.1016/j.msea.2017.04.033 ↗
16. Effect of interlayers and scanning strategies on through-thickness residual stress distributions in additive manufactured ferritic-austenitic steel structure10.1016/j.msea.2018.12.078 ↗
17. Effect of scanning strategies on residual stress and mechanical properties of Selective Laser Melted Ti6Al4V10.1016/j.msea.2017.11.103 ↗
18. Understanding the effect of laser scan strategy on residual stress in selective laser melting through thermo-mechanical simulation
19. An overview of residual stresses in metal powder bed fusion
20. Fatigue crack propagation behaviour in wire+arc additive manufactured Ti-6Al-4V: effects of microstructure and residual stress10.1016/j.matdes.2015.10.141 ↗
21. Predictive model for porosity in powder-bed fusion additive manufacturing at high beam energy regime
22. Critical assessment of the fatigue performance of additively manufactured Ti–6Al–4V and perspective for future research10.1016/j.ijfatigue.2015.12.003 ↗
23. LCF behaviour and a comprehensive life prediction model for AlSi10Mg obtained by SLM10.1016/j.ijfatigue.2018.07.030 ↗
24. Low- and high-cycle fatigue resistance of Ti-6Al-4V ELI additively manufactured via selective laser melting: mean stress and defect sensitivity10.1016/j.ijfatigue.2017.10.021 ↗
25. Fatigue behavior and failure mechanisms of direct laser deposited Ti–6Al–4V10.1016/j.msea.2015.12.026 ↗
26. Computed tomography for characterization of fatigue performance of selective laser melted parts10.1016/j.matdes.2015.06.063 ↗
27. Oxides, porosity and fatigue performance of AlSi10Mg parts produced by selective laser melting10.1016/j.ijfatigue.2016.06.002 ↗
28. Relating porosity to fatigue failure in additively manufactured alloy 71810.1016/j.msea.2018.04.075 ↗
29. Effects of defects in laser additive manufactured Ti-6Al-4V on fatigue properties10.1016/j.phpro.2014.08.120 ↗
30. Fatigue performance evaluation of selective laser melted Ti–6Al–4V10.1016/j.msea.2014.01.041 ↗
31. Anisotropic response of Ti-6Al-4V alloy fabricated by 3D printing selective laser melting10.1016/j.msea.2016.11.061 ↗
32. Evaluation of fatigue crack propagation behaviour in Ti-6Al-4V manufactured by selective laser melting10.1016/j.ijfatigue.2017.07.014 ↗
33. Multi-scale damage mechanics method for fatigue life prediction of additive manufacture structures of Ti-6Al-4V10.1016/j.msea.2016.05.073 ↗
34. Evaluation on tensile and fatigue crack growth performances of Ti6Al4V alloy produced by selective laser melting10.1016/j.prostr.2017.11.069 ↗
35. Beyond the orthogonal: on the influence of build orientation on fatigue crack growth in SLM Ti-6Al-4V10.1016/j.ijfatigue.2018.06.038 ↗
36. Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: a critical review10.1016/j.matdes.2017.11.021 ↗
37. Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V10.1016/j.msea.2014.07.086 ↗
38. Fatigue behaviour of notched additive manufactured Ti6Al4V with as-built surfaces10.1016/j.ijfatigue.2017.04.009 ↗
39. Fatigue crack propagation properties of Ti–6Al–4V in vacuum environments10.1016/j.ijfatigue.2012.02.012 ↗
40. Effect of load ratio and maximum stress intensity on the fatigue threshold in Ti-6Al-4V10.1016/S0013-7944(00)00099-0 ↗