Effects of building direction and loading mode on the high cycle fatigue strength of the laser powder bed fusion 316L
Source abstract
Abstract
The present study aims to investigate the high cycle fatigue (HCF) performance of steel 316L fabricated by the laser powder bed fusion (LPBF) process. Bending and torsional fatigue test specimens built horizontally (0°), inclined (45°), and vertically (90°) have been prepared and tested. Stress-relieving heat treatment was carried out to reduce the residual stresses. The 90°, 45°, and 0° built near-net-shape and polished specimens have fatigue strengths between 140 and 250 MPa under bending loading and 150 and 170 MPa under torsion loading. This difference illustrates a more pronounced defect sensitivity in bending compared to torsion. Fractographical analyses revealed the fatigue failure mechanisms. As the building direction inclines from vertical to horizontal, the effective areas of inherent defects diminish contributing to improving fatigue strength under bending loading whilst the differences from building directions in torsional fatigue strengths are minor. Microstructural features are seen to compete with inherent defects to affect fatigue performance in the condition that the effective defect sizes are close to the critical fatigue crack size.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Welding Techniques and Residual Stresses · Additive Manufacturing and 3D Printing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
Show source-provided references
1. Additive manufacturing of metallic components – Process, structure and properties10.1016/j.pmatsci.2017.10.001 ↗
2. A review on metallurgical aspects of laser additive manufacturing (LAM): Stainless steels, nickel superalloys, and titanium alloys10.1016/j.jmrt.2021.12.039 ↗
3. Intragranular cellular segregation network structure strengthening 316L stainless steel prepared by selective laser melting10.1016/j.jnucmat.2015.12.034 ↗
4. Texture control of 316L parts by modulation of the melt pool morphology in selective laser melting10.1016/j.jmatprotec.2018.08.049 ↗
5. Microstructural and mechanical anisotropy of selective laser melted IN718 superalloy at room and high temperatures using small punch test10.1016/j.matchar.2020.110200 ↗
6. Microstructure and anisotropic mechanical properties of selective laser melted Ti6Al4V alloy under different scanning strategies10.1016/j.msea.2021.142236 ↗
7. Effect of build orientation on the quasi-static and dynamic response of SLM AlSi10Mg10.1016/j.msea.2020.139445 ↗
8. On the texture and mechanical property anisotropy of Ti6Al4V alloy fabricated by powder-bed based laser additive manufacturing10.1016/j.vacuum.2020.109732 ↗
9. Effects of laser scanning speed and building direction on the microstructure and mechanical properties of selective laser melted Inconel 718 superalloy
10. Microstructures and mechanical properties evolution of IN939 alloy during electron beam selective melting process10.1016/j.jallcom.2021.160934 ↗
11. Microstructure, mechanical properties and strengthening mechanisms of IN738LC alloy produced by Electron Beam Selective Melting
12. Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: A critical review10.1016/j.matdes.2017.11.021 ↗
13. Defects in additive manufactured metals and their effect on fatigue performance: A state-of-the-art review10.1016/j.pmatsci.2020.100724 ↗
14. Fracture and fatigue in additively manufactured metals10.1016/j.actamat.2021.117240 ↗
15. Effect of post-treatments on the fatigue behaviour of 316L stainless steel manufactured by laser powder bed fusion10.1016/j.ijfatigue.2019.01.013 ↗
16. Effects of building orientation and heat treatment on fatigue behavior of selective laser melted 17–4 PH stainless steel10.1016/j.ijfatigue.2016.03.014 ↗
17. Fatigue performance and crack propagation behavior of selective laser melted AlSi10Mg in 0°, 15°, 45° and 90° building directions10.1016/j.msea.2021.141141 ↗
18. The influence of building direction on the fatigue crack propagation behavior of Ti6Al4V alloy produced by selective laser melting10.1016/j.msea.2019.138409 ↗
19. Anisotropic fatigue properties of Alloy 718 manufactured by Electron Beam Powder Bed Fusion10.1016/j.ijfatigue.2020.105898 ↗
20. Effect of microstructure induced anisotropy on fatigue behaviour of functionally graded Inconel 718 fabricated by additive manufacturing10.1016/j.matchar.2021.111350 ↗
21. Steels in additive manufacturing: A review of their microstructure and properties10.1016/j.msea.2019.138633 ↗
22. Mechanical behavior of additive manufactured, powder-bed laser-fused materials10.1016/j.msea.2015.10.068 ↗
23. Effect of selective laser melting (SLM) process parameters on microstructure and mechanical properties of 316L austenitic stainless steel10.1016/j.jmatprotec.2017.05.042 ↗
24. Investigation of the anisotropic fatigue behavior of additively manufactured structures made of AISI 316L with short-time procedures PhyBaL LIT and PhyBaL CHT10.1016/j.ijfatigue.2019.03.022 ↗
25. Fatigue behavior of additive manufactured 316L stainless steel parts: Effects of layer orientation and surface roughness
26. High cycle fatigue behavior of 316L steel fabricated by laser powder bed fusion: Effects of surface defect and loading mode10.1016/j.ijfatigue.2022.106843 ↗
27. Effect of micro-defects on fatigue lifetime of additive manufactured 316L stainless steel under multiaxial loading10.1016/j.tafmec.2020.102849 ↗
28. Constant/variable amplitude multiaxial notch fatigue of additively manufactured AISI 316L10.1016/j.ijfatigue.2021.106412 ↗
29. Surface roughness effect on multiaxial fatigue behavior of additive manufactured metals and its modeling10.1016/j.tafmec.2019.102260 ↗
30. Multiaxial fatigue of Inconel 718 produced by Selective Laser Melting at room and high temperature10.1016/j.ijfatigue.2022.107108 ↗
31. Multiaxial fatigue behavior of SLM Ti6Al4V alloy under different loading conditions10.1111/ffe.13518 ↗
32. Correlation between microstructure and cyclic behavior of 316L stainless steel obtained by Laser Powder Bed Fusion10.1111/ffe.13684 ↗
33. Murakami · 2002
34. Experimental investigation of the size effect in High Cycle Fatigue: role of the defect population in cast aluminium alloys10.1016/j.ijfatigue.2019.105222 ↗
35. A new FE post-processor for probabilistic fatigue assessment in the presence of defects and its application to AM parts10.1016/j.ijfatigue.2019.04.008 ↗
36. Interpretation of the fatigue anisotropy of additively manufactured TA6V alloys via a fracture mechanics approach10.1016/j.engfracmech.2019.03.048 ↗
37. Fatigue from Defect: Influence of Size, Type, Position
38. Estimation of Feret’s diameter from pixel coverage representation of a shape10.1016/j.patrec.2016.04.021 ↗
39. The Exponential Law of Endurance Tests
40. A probabilistic model for the high cycle fatigue behaviour of cast aluminium alloys subject to complex loads10.1016/j.ijfatigue.2012.08.004 ↗
41. Influence of the microstructure and voids on the high-cycle fatigue strength of 316L stainless steel under multiaxial loading10.1111/ffe.12304 ↗
42. Roirand H, Hor A, Malard B, Saintier N. Effect of laser-scan strategy on microstructure and fatigue properties of 316L additively manufactured stainless steel 2022:1–17. https://doi.org/10.1111/ffe.13845.10.1111/ffe.13845 ↗
43. Fousová M, Vojtěch D, Doubrava K, Daniel M, Lin CF. Influence of Inherent Surface and Internal Defects on Mechanical Properties of Additively Manufactured Ti6Al4V Alloy: Comparison between Selective Laser Melting and Electron Beam Melting. Mater 2018, Vol 11, Page 537 2018;11:537. https://doi.org/10.3390/MA11040537.10.3390/ma11040537 ↗
44. Kitagawa H, Takahashi S. Applicability of Fracture Mechanics to Very Small Cracks or the Cracks in the Early Stage. Proc 2nd Int Conf Mech Behav Mater 1976:627–39.
45. Fatigue Crack Propagation of Short Cracks10.1115/1.3443647 ↗
46. On the fatigue crack growth behavior in 316L stainless steel manufactured by selective laser melting10.1016/j.engfracmech.2014.03.008 ↗
47. Crack Propagation in Additive Manufactured Materials and Structures10.1016/j.prostr.2016.06.157 ↗
48. Study of the effect of heat treatment on fatigue crack growth behaviour of 316L stainless steel produced by selective laser melting10.1111/ffe.12755 ↗
49. Mechanical behavior of selective laser melted 316L stainless steel10.1016/j.msea.2017.04.058 ↗
50. A numerical investigation of the high cycle fatigue sensitivity to microstructure and defect10.1016/j.ijfatigue.2020.105541 ↗
51. Numerical investigation of the surface and microstructure effects on the high cycle fatigue performance of additive manufactured stainless steel 316L10.1016/j.ijfatigue.2021.106273 ↗
52. High cycle fatigue damage mechanisms in cast aluminium subject to complex loads10.1016/j.ijfatigue.2012.07.008 ↗
53. Probabilistic approach in high-cycle multiaxial fatigue: volume and surface effects10.1111/j.1460-2695.2004.00823.x ↗
54. Simulation of the Kitagawa-Takahashi diagram using a probabilistic approach for cast Al-Si alloys under different multiaxial loads10.1016/j.ijfatigue.2016.08.014 ↗