Defect-based characterization of the fatigue behavior of additively manufactured titanium aluminides
Source abstract
Abstract
The additively manufactured titanium aluminide alloy TNM-B1 was characterized microstructurally and mechanically in the as-built and hot isostatically pressed (HIP) condition. Tensile and constant amplitude tests were performed at room temperature and 800 °C. Using fractographic SEM images, the fracture-inducing defect was identified. With the HIP, defect number and size could be reduced, increasing fatigue strength by 43% to 500 MPa. Using the model approaches of Murakami and Shiozawa, the fatigue life was correlated with the local stress intensity factor and could be described as function of the stress amplitude as well as the size and location of fracture-inducing defects.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · Titanium Alloys Microstructure and Properties · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (64)
Show source-provided references
1. Intermetallic alloys based on gamma titanium aluminide10.1007/BF03220267 ↗
2. Light-weight intermetallic titanium aluminides – status of research and development10.4028/www.scientific.net/AMR.278.551 ↗
3. Advances in gammalloy materials–processes–application Technology: successes, dilemmas, and future10.1007/s11837-018-2747-x ↗
4. Application of TiAl in a turbocharger for passenger vehicles10.1002/1527-2648(200105)3:5<307::AID-ADEM307>3.0.CO;2-3 ↗
5. Review of alloy and process development of TiAl alloys10.1016/j.intermet.2005.10.019 ↗
6. Appel F, Paul JDH, Oehring M. Gamma titanium aluminide alloys: Science and technology. Weinheim, Germany: Wiley-VCH; 2011.10.1002/9783527636204 ↗
7. Intermetallic β-solidifying γ-TiAl based alloys − from fundamental research to application10.1002/adem.201600735 ↗
8. Yang · 2017
9. Mechanical properties of TiAl fabricated by electron beam melting - A review10.1007/s41230-021-1093-8 ↗
10. Additive manufacturing of metallic components by selective electron beam melting - a review10.1080/09506608.2016.1176289 ↗
11. Electron beam melting of Ti–48Al–2Cr–2Nb alloy: Microstructure and mechanical properties investigation10.1016/j.intermet.2010.11.017 ↗
12. Additive manufacturing of Ti-45Al-4Nb-C by selective electron beam melting for automotive applications
13. Electron beam melting of high niobium containing tial alloy: feasibility investigation10.1002/srin.201100282 ↗
14. Metallography of intermetallic titanium aluminides – the (additive) manufacturing makes the difference10.3139/147.110622 ↗
15. Selected methods of quantitative phase analysis of an additively manufactured TNM titanium aluminide alloy10.3139/147.110574 ↗
16. Research on aluminum component change and phase transformation of TiAl-based alloy in electron beam selective melting process under multiple scan10.1016/j.intermet.2019.106575 ↗
17. Numerical simulation of multi-component evaporation during selective electron beam melting of TiAl10.1016/j.jmatprotec.2017.04.016 ↗
18. Defect generation and propagation mechanism during additive manufacturing by selective beam melting10.1016/j.jmatprotec.2014.05.002 ↗
19. Predictive simulation of process windows for powder bed fusion additive manufacturing: Influence of the powder size distribution10.1016/j.camwa.2018.06.029 ↗
20. Effects of HIP on microstructural heterogeneity, defect distribution and mechanical properties of additively manufactured EBM Ti-48Al-2Cr-2Nb10.1016/j.jallcom.2017.09.163 ↗
21. Plastic deformation and fracture of binary TiAl-base alloys10.1007/BF02656810 ↗
22. The effects of Cr additions to binary TiAl-base alloys10.1007/BF02851355 ↗
23. Kim Y-W, Smarsly W, Lin J, Dimiduk D, Appel F (eds.). Gamma titanium aluminide alloys 2014. Hoboken, NJ, USA: John Wiley & Sons, Inc; 2014.10.1002/9781118998489 ↗
24. TiAl alloys in commercial aircraft engines10.1080/09603409.2016.1183068 ↗
25. Habel U., Heutling F., Kunze C., Smarsly W., Das G., Clemens H.. Forged intermetallic γ-TiAl based alloy low pressure turbine blade in the geared turbofan. In: Venkatesh V, Pilchak AL, Allison JE, Ankem S, Boyer RR, Ch J, editors. 2015 World Conference on Titanium, 1st ed. s.l.: Wiley-TMS; 2016, p. 1223–1227.10.1002/9781119296126.ch208 ↗
26. Design of novel β-solidifying TiAl alloys with adjustable β/B2-phase fraction and excellent hot-workability10.1002/adem.200800164 ↗
27. Microstructural design and mechanical properties of a cast and heat-treated intermetallic multi-phase γ-TiAl based alloy10.1016/j.intermet.2013.09.010 ↗
28. Design, processing, microstructure, properties, and applications of advanced intermetallic TiAl alloys
29. Designing advanced intermetallic titanium aluminide alloys for additive manufacturing10.1016/j.intermet.2021.107109 ↗
30. Processing 4th generation titanium aluminides via electron beam based additive manufacturing – characterization of microstructure and mechanical properties10.1016/j.mtla.2020.100902 ↗
31. Effect of building direction on the microstructure and tensile properties of Ti-48Al-2Cr-2Nb alloy additively manufactured by electron beam melting
32. Microstructure and tensile properties of Ti-48Al-2Cr-2Nb rods additively manufactured by selective electron beam melting10.1007/s11837-017-2583-4 ↗
33. Microstructure analysis and mechanical properties of electron beam powder bed fusion (PBF-EB)-manufactured γ-titanium aluminide (TiAl) at elevated temperatures10.1515/mt-2021-2137 ↗
34. Microstructure, texture and tensile property as a function of scanning speed of Ti-47Al-2Cr-2Nb alloy fabricated by selective electron beam melting10.1016/j.msea.2017.12.020 ↗
35. Microstructure and mechanical properties of a high Nb-TiAl alloy fabricated by electron beam melting10.1016/j.matdes.2018.09.044 ↗
36. Characterization of the high-temperature behavior of PBF-EB/M manufactured γ titanium aluminides10.1007/s40964-022-00274-x ↗
37. Recent progress in the high-cycle fatigue behaviour of γ -TiAl alloys10.1080/02670836.2018.1463614 ↗
38. Filippini M., Beretta S., Patriarca L., Sabbadini S.. Effect of the microstructure on the deformation and fatigue damage in a gamma-TiAl produced by additive manufacturing. Gamma titanium aluminides alloys;2014:189–93. doi: 10.1002/9781118998489.ch26.10.1002/9781118998489.ch26 ↗
39. Defect tolerance of a gamma titanium aluminide alloy10.1016/j.proeng.2011.04.605 ↗
40. Fatigue sensitivity to small defects of a gamma–titanium–aluminide alloy10.1520/JAI104293 ↗
41. Digital image correlation-based analysis of strain accumulation on a duplex γ-TiAl10.1016/j.intermet.2016.05.013 ↗
42. Defect distribution and microstructure heterogeneity effects on fracture resistance and fatigue behavior of EBM Ti–6Al–4V10.1016/j.ijfatigue.2016.06.001 ↗
43. The role of competing mechanisms in the fatigue life variability of a nearly fully-lamellar ?-TiAl based alloy10.1016/j.actamat.2004.11.022 ↗
44. Effects of test orientation on fracture and fatigue crack growth behavior of third generation as-cast Ti–48Al–2Nb–2Cr10.1016/j.intermet.2014.10.005 ↗
45. Effect of environment on the fatigue crack growth of gamma titanium aluminide alloys at ambient temperatures10.1016/S1359-6462(01)00950-2 ↗
46. Material defects as the basis of fatigue design10.1016/j.ijfatigue.2011.12.001 ↗
47. Effects of hardness and crack geometries on ΔKth of small cracks emanating from small defects
48. Influence of porosity on the fatigue limit of die cast magnesium and aluminium alloys10.1016/S0142-1123(02)00054-3 ↗
49. Effects of small defects and nonmetallic inclusions on the fatigue strength of metals10.1299/jsmea1988.32.2_167 ↗
50. Initiation and propagation processes of internal fatigue cracks in β titanium alloy based on fractographic analysis10.3390/app11010131 ↗
51. Fracture–mechanical assessment of the effect of defects on the fatigue lifetime and limit in cast and additively manufactured aluminum–silicon alloys from HCF to VHCF regime10.3390/met10070943 ↗
52. Effect of non-metallic inclusion size and residual stresses on gigacycle fatigue properties in high strength steel10.4028/www.scientific.net/AMR.44-46.33 ↗
53. Uniform fatigue damage tolerance assessment for additively manufactured and cast Al-Si alloys: An elastic-plastic fracture mechanical approach
54. Electron beam powder bed fusion of γ-titanium aluminide: Effect of processing parameters on part density, surface characteristics, and aluminum content10.3390/met11071093 ↗
55. ImageJ. https://imagej.nih.gov/ij/.
56. Microstructure and fatigue properties of TiAl with unique layered microstructure fabricated by electron beam melting10.4028/www.scientific.net/MSF.941.1597 ↗
57. Fatigue behaviour of additively manufactured Ti-6Al-4V alloy: The role of defects on scatter and statistical size effect10.1016/j.ijfatigue.2020.105811 ↗
58. Influence of inclusion size on S-N curve characteristics of high-strength steels in the giga-cycle fatigue regime10.1111/j.1460-2695.2009.01370.x ↗
59. Transition of fatigue failure mode of Ni–Cr–Mo low-alloy steel in very high cycle regime10.1016/j.ijfatigue.2009.06.011 ↗
60. A literature review of powder-based electron beam melting focusing on numerical simulations
61. Interpretation of the fatigue anisotropy of additively manufactured TA6V alloys via a fracture mechanics approach10.1016/j.engfracmech.2019.03.048 ↗
62. The influence of heat treatment and solidification time on the behavior of small-fatigue-cracks in a cast aluminum alloy10.1016/S0921-5093(00)01916-X ↗
63. The effect of solidification rate on the growth of small fatigue cracks in a cast 319-type aluminum alloy10.1007/s11661-999-0216-4 ↗
64. Demonstration of an endurance limit in cast 319 aluminum10.1007/s11661-003-0206-x ↗