Abstract
This paper investigates the fatigue behaviour of laser powder bed fusion (LPBF) processed Ti6Al4V samples under three build orientations. The post-heat treatment (PHT-1050 °C) was carried out. The microstructural characterization was performed using optical microscopy, X-ray diffraction SEM and EDS techniques. The tensile test and high cycle fatigue tests were performed. The PHT performed at 1050 °C exhibited Widmanstatten microstructure consisting of a higher volume fraction of elongated β and a small amount of α. PHT samples’ ductility was ~ 67%, 40% and 177% higher than the as-printed samples under horizontal, inclined and vertical orientations. Interestingly, the fatigue lives of PHT samples at higher stress levels were higher and nearly isotropic in all three build orientations than the as-printed samples due to enhanced ductility and fewer critical pores. Further strong correlation between PHT samples and ductility was established. Moreover, there was a marginal improvement in fatigue limit due to PHT at 1050 °C compared to as-printed samples.
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References
Acharya R, Sharon JA, Staroselsky A (2017) Prediction of microstructure in laser powder bed fusion process. Acta Mater 124:360–371. https://doi.org/10.1016/j.actamat.2016.11.018
Ackelid U, Svensson M (2009) Additive manufacturing of dense metal parts by electron beam melting. In: Proceedings of the Materials Science and Technology Conference, Pittsburgh, PA, USA. Oct 25 (Vol 2529, p 9)
Afroz L, Das R, Qian M et al (2022) Fatigue behaviour of laser powder bed fusion (L-PBF) Ti–6Al–4V, Al–Si–Mg and stainless steels: a brief overview. Int J Fract 235:3–46. https://doi.org/10.1007/s10704-022-00641-3
Alipour S, Moridi A, Liou F, Emdadi A (2022) The trajectory of additively manufactured titanium alloys with superior mechanical properties and engineered microstructures. Addit Manuf 60:103245. https://doi.org/10.1016/j.addma.2022.103245
Cao S, Zou Y, Lim CVS, Wu X (2021) Review of laser powder bed fusion (LPBF) fabricated Ti-6Al-4V: process, post-process treatment, microstructure, and property. Light: Adv Manuf 2:313–332
Carroll BE, Palmer TA, Beese AM (2015) Anisotropic tensile behavior of Ti–6Al–4V components fabricated with directed energy deposition additive manufacturing. Acta Mater 87:309–320. https://doi.org/10.1016/j.actamat.2014.12.054
Chastand V, Tezenas A, Cadoret Y et al (2016) Fatigue characterization of Titanium Ti-6Al-4V samples produced by additive manufacturing. Procedia Struct Integr 2:3168–3176. https://doi.org/10.1016/j.prostr.2016.06.395
Chen C, Gu D, Dai D et al (2019) Laser additive manufacturing of layered TiB2/Ti6Al4V multi-material parts: understanding thermal behavior evolution. Opt Laser Technol 119:105666. https://doi.org/10.1016/j.optlastec.2019.105666
Chen B, Wu Z, Yan T et al (2022) Experimental study on mechanical properties of laser powder bed fused Ti-6Al-4V alloy under post-heat treatment. Eng Fract Mech 261:108264. https://doi.org/10.1016/j.engfracmech.2022.108264
Chern AH, Nandwana P, Yuan T et al (2019) A review on the fatigue behavior of Ti-6Al-4V fabricated by electron beam melting additive manufacturing. Int J Fatigue 119:173–184. https://doi.org/10.1016/j.ijfatigue.2018.09.022
Crowe T, Guraydin A (2011) The effects of heat treatment on area percent porosity and corrosion behavior of high-nickel thermal spray coatings. Mater Eng
De Formanoir C, Brulard A, Vivès S et al (2017) A strategy to improve the work-hardening behavior of Ti–6Al–4V parts produced by additive manufacturing. Mater Res Lett 5:201–208. https://doi.org/10.1080/21663831.2016.1245681
DebRoy T, Wei HL, Zuback JS et al (2018) Additive manufacturing of metallic components—process, structure and properties. Prog Mater Sci 92:112–224. https://doi.org/10.1016/j.pmatsci.2017.10.001
Edwards P, Ramulu M (2014) Fatigue performance evaluation of selective laser melted Ti–6Al–4V. Mater Sci Eng A 598:327–337. https://doi.org/10.1016/j.msea.2014.01.041
Elangeswaran C, Cutolo A, Muralidharan GK et al (2020) Microstructural analysis and fatigue crack initiation modelling of additively manufactured 316L after different heat treatments. Mater Des 194:108962. https://doi.org/10.1016/j.matdes.2020.108962
Fernandes RF, Jesus JS, Branco R et al (2022) Influence of post-processing heat treatment on the cyclic deformation behaviour of AlSi10Mg aluminium alloy subjected to laser powder bed fusion. Int J Fatigue 164:107157. https://doi.org/10.1016/j.ijfatigue.2022.107157
Frazier WE (2014) Metal additive manufacturing: a review. J Mater Eng Perform 23:1917–1928. https://doi.org/10.1007/s11665-014-0958-z
Gao W, Zhang Y, Ramanujan D et al (2015) The status, challenges, and future of additive manufacturing in engineering. Comput Aided Des 69:65–89. https://doi.org/10.1016/j.cad.2015.04.001
Gao X, Tao C, Wu S (2023) Anisotropic high cycle fatigue property estimation for laser additive manufactured Ti6Al4V alloy dependence on tomographic imaging of defect population. J Market Res 22:1971–1982. https://doi.org/10.1016/j.jmrt.2022.12.069
Hagiwara M, Kitaura T, Ono Y et al (2012) High cycle fatigue properties of a minor boron-modified Ti–6Al–4V alloy. Mater Trans 53:1486–1494. https://doi.org/10.2320/matertrans.M2012104
Jimenez EH, Kreitcberg A, Moquin E, Brailovski V (2022) Influence of post-processing conditions on the microstructure, static, and fatigue resistance of laser powder bed fused Ti-6Al-4V components. J Manuf Mater Process 6:85. https://doi.org/10.3390/jmmp6040085
Kahlin M, Ansell H, Moverare JJ (2017a) Fatigue behaviour of notched additive manufactured Ti6Al4V with as-built surfaces. Int J Fatigue 101:51–60. https://doi.org/10.1016/j.ijfatigue.2017.04.009
Kahlin M, Ansell H, Moverare JJ (2017b) Fatigue behaviour of additive manufactured Ti6Al4V, with as-built surfaces, exposed to variable amplitude loading. Int J Fatigue 103:353–362. https://doi.org/10.1016/j.ijfatigue.2017.06.023
Kahlin M, Ansell H, Moverare J (2022) Fatigue crack growth for through and part-through cracks in additively manufactured Ti6Al4V. Int J Fatigue 155:106608. https://doi.org/10.1016/j.ijfatigue.2021.106608
Kok Y, Tan XP, Wang P et al (2018) Anisotropy and heterogeneity of microstructure and mechanical properties in metal additive manufacturing: a critical review. Mater Des 139:565–586. https://doi.org/10.1016/j.matdes.2017.11.021
Kumar P, Ramamurty U (2020) High cycle fatigue in selective laser melted Ti-6Al-4V. Acta Mater 194:305–320. https://doi.org/10.1016/j.actamat.2020.05.041
Leuders S, Thöne M, Riemer A et al (2013) On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: fatigue resistance and crack growth performance. Int J Fatigue 48:300–307. https://doi.org/10.1016/j.ijfatigue.2012.11.011
Leuders S, Lieneke T, Lammers S et al (2014) On the fatigue properties of metals manufactured by selective laser melting—the role of ductility. J Mater Res 29:1911–1919. https://doi.org/10.1557/jmr.2014.157
Leuders S, Vollmer M, Brenne F et al (2015) Fatigue strength prediction for titanium alloy TiAl6V4 manufactured by selective laser melting. Metall and Mater Trans A 46:3816–3823
Liu S, Shin YC (2019) Additive manufacturing of Ti6Al4V alloy: a review. Mater Des 164:107552. https://doi.org/10.1016/j.matdes.2018.107552
Liu QC, Elambasseril J, Sun SJ et al (2014) The effect of manufacturing defects on the fatigue behaviour of Ti-6Al-4V specimens fabricated using selective laser melting. Adv Mater Res 891–892:1519–1524. https://doi.org/10.4028/www.scientific.net/AMR.891-892.1519
Lütjering G (1998) Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys. Mater Sci Eng A 243:32–45. https://doi.org/10.1016/S0921-5093(97)00778-8
Lutjering G, Williams JC, Gysler A (2000) Microstructure and mechanical properties of titanium alloys. Microstruct Prop Mater 2:1–77
Mays TJ (2007) A new classification of pore sizes. Stud Surf Sci Catal 160:57–62
Murakami Y (2012) Material defects as the basis of fatigue design. Int J Fatigue 41:2–10. https://doi.org/10.1016/j.ijfatigue.2011.12.001
Nagesha BK, Kumar SA, Rajeswari S et al (2022) Inspection of additively manufactured aero-engine parts using computed radiography technique. J Mater Eng Perf 31:6322–6331
Nalla RK, Ritchie RO, Boyce BL et al (2002) Influence of microstructure on high-cycle fatigue of Ti-6Al-4V: bimodal vs. lamellar structures. Metall Mater Trans A 33:899–918. https://doi.org/10.1007/s11661-002-0160-z
Pathania A, Subramaniyan AK, Nagesha BK (2022) Influence of post-heat treatments on microstructural and mechanical properties of LPBF-processed Ti6Al4V alloy. Prog Addit Manuf 7:1323–1343. https://doi.org/10.1007/s40964-022-00306-6
Pederson R, Babushkin O, Skystedt F, Warren R (2003) Use of high temperature X-ray diffractometry to study phase transitions and thermal expansion properties in Ti-6Al-4V. Mater Sci Technol 19:1533–1538. https://doi.org/10.1179/026708303225008013
Pegues JW, Shao S, Shamsaei N et al (2020) Fatigue of additive manufactured Ti-6Al-4V, Part I: the effects of powder feedstock, manufacturing, and post-process conditions on the resulting microstructure and defects. Int J Fatigue 132:105358. https://doi.org/10.1016/j.ijfatigue.2019.105358
Qian G, Li Y, Paolino DS et al (2020) Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: effect of build orientation. Int J Fatigue 136:105628. https://doi.org/10.1016/j.ijfatigue.2020.105628
Qu Z, Zhang ZJ, Zhu YK et al (2023) Coupling effects of microstructure and defects on the fatigue properties of laser powder bed fusion Ti-6Al-4V. Addit Manuf 61:103355. https://doi.org/10.1016/j.addma.2022.103355
Rafi HK, Starr TL, Stucker BE (2013) A comparison of the tensile, fatigue, and fracture behavior of Ti–6Al–4V and 15–5 PH stainless steel parts made by selective laser melting. Int J Adv Manuf Technol 69:1299–1309. https://doi.org/10.1007/s00170-013-5106-7
Romero C, Yang F, Bolzoni L (2018) Fatigue and fracture properties of Ti alloys from powder-based processes—a review. Int J Fatigue 117:407–419. https://doi.org/10.1016/j.ijfatigue.2018.08.029
Shamir M, Syed AK, Janik V et al (2020) The role of microstructure and local crystallographic orientation near porosity defects on the high cycle fatigue life of an additive manufactured Ti-6Al-4V. Mater Charact 169:110576. https://doi.org/10.1016/j.matchar.2020.110576
Shui X, Yamanaka K, Mori M et al (2017) Effects of post-processing on cyclic fatigue response of a titanium alloy additively manufactured by electron beam melting. Mater Sci Eng A 680:239–248. https://doi.org/10.1016/j.msea.2016.10.059
Sterling AJ, Torries B, Shamsaei N et al (2016) Fatigue behavior and failure mechanisms of direct laser deposited Ti–6Al–4V. Mater Sci Eng A 655:100–112. https://doi.org/10.1016/j.msea.2015.12.026
Sun W, Ma Y, Huang W et al (2020) Effects of build direction on tensile and fatigue performance of selective laser melting Ti6Al4V titanium alloy. Int J Fatigue 130:105260. https://doi.org/10.1016/j.ijfatigue.2019.105260
Tammas-Williams S, Withers PJ, Todd I, Prangnell PB (2017) The influence of porosity on fatigue crack initiation in additively manufactured titanium components. Sci Rep 7:1–13
Tarik Hasib M, Ostergaard HE, Li X, Kruzic JJ (2021) Fatigue crack growth behavior of laser powder bed fusion additive manufactured Ti-6Al-4V: roles of post heat treatment and build orientation. Int J Fatigue 142:105955. https://doi.org/10.1016/j.ijfatigue.2020.105955
Tascioglu E, Karabulut Y, Kaynak Y (2020) Influence of heat treatment temperature on the microstructural, mechanical, and wear behavior of 316L stainless steel fabricated by laser powder bed additive manufacturing. Int J Adv Manuf Technol 107:1947–1956
Tsai M-T, Chen Y-W, Chao C-Y et al (2020) Heat-treatment effects on mechanical properties and microstructure evolution of Ti-6Al-4V alloy fabricated by laser powder bed fusion. J Alloy Compd 816:152615. https://doi.org/10.1016/j.jallcom.2019.152615
Vrancken B, Thijs L, Kruth J-P, Van Humbeeck J (2012) Heat treatment of Ti6Al4V produced by selective laser melting: microstructure and mechanical properties. J Alloy Compd 541:177–185. https://doi.org/10.1016/j.jallcom.2012.07.022
Xiu M, Tan YT, Raghavan S et al (2022) The effect of heat treatment on microstructure, microhardness, and pitting corrosion of Ti6Al4V produced by electron beam melting additive manufacturing process. Int J Adv Manuf Technol. https://doi.org/10.1007/s00170-022-08839-4
Xu W, Sun S, Elambasseril J et al (2015) Ti-6Al-4V additively manufactured by selective laser melting with superior mechanical properties. JOM 67:668–673. https://doi.org/10.1007/s11837-015-1297-8
Xu Z, Liu A, Wang X et al (2021) Fatigue limit prediction model and fatigue crack growth mechanism for selective laser melting Ti6Al4V samples with inherent defects. Int J Fatigue 143:106008. https://doi.org/10.1016/j.ijfatigue.2020.106008
Yadollahi A, Shamsaei N (2017) Additive manufacturing of fatigue resistant materials: challenges and opportunities. Int J Fatigue 98:14–31. https://doi.org/10.1016/j.ijfatigue.2017.01.001
Yan X, Yin S, Chen C et al (2018) Effect of heat treatment on the phase transformation and mechanical properties of Ti6Al4V fabricated by selective laser melting. J Alloy Compd 764:1056–1071. https://doi.org/10.1016/j.jallcom.2018.06.076
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All authors contributed to the study’s conception and design. Akshay P, Anand Kumar S, and Nagesh BK performed material preparation, data collection and analysis. Akshay P wrote the first draft of the manuscript and all authors commented on the refined current version. All authors read and approved the final manuscript.
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Pathania, A., Subramaniyan, A.K. & Kenchappa, N.B. Influence of post-heat treatment with super β transus temperature on the fatigue behaviour of LPBF processed Ti6Al4V. Int J Fract 246, 345–361 (2024). https://doi.org/10.1007/s10704-024-00784-5
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DOI: https://doi.org/10.1007/s10704-024-00784-5