A microstructure-based creep model for additively manufactured nickel-based superalloys
Source abstract
Abstract
Abstract Creep fracture is a general failure mode for nickel-based superalloy components made by additive manufacturing (AM). However, the existing creep models originally built for conventional superalloys cannot explain the creep rate acceleration caused by fast cavitation, which relates to the AM-specific microstructural features, in particular the porosity, columnar grain structure and compositional inhomogeneity. In this work, a microstructure-based creep model is developed for additively manufactured Ni-based superalloys that specifically considers the correlation between cavity formation kinetics and creep deformation behaviour. The applications to IN718 and IN738LC demonstrate the model can well simulate the creep process at all stages and the creep lifetime for a wide range of microstructures. After calibration, the effects of the aforementioned AM-produced microstructure features on creep performance were discussed. The simulated data in cooperation with experimental results shows a significant increment in creep rate and a decrement in lifetime due to fast cavitation. The application of the model can simulate the creep performance of AM alloys and provide a quantitative method to estimate the influence of AM-produced microstructure features on creep performance. Moreover, the time-consuming creep testing procedure can be reduced once the model is calibrated with experimental data.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Temperature Alloys and Creep · Additive Manufacturing Materials and Processes · Nuclear Materials and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (60)
Show source-provided references
1. A review of mechanical properties of additively manufactured inconel 718
2. Study on the microstructure and creep behavior of Inconel 718 superalloy fabricated by selective laser melting10.1016/j.msea.2019.138282 ↗
3. Effects of build direction and heat treatment on creep properties of Ni-base superalloy built up by additive manufacturing10.1016/j.scriptamat.2016.10.035 ↗
4. Creep behaviour of inconel 718 processed by laser powder bed fusion10.1016/j.jmatprotec.2018.01.040 ↗
5. Study on the element segregation and Laves phase formation in the laser metal deposited IN718 superalloy by flat top laser and gaussian distribution laser10.1016/j.msea.2019.03.096 ↗
6. The influence of Laves phases on the room temperature tensile properties of Inconel 718 fabricated by powder feeding laser additive manufacturing10.1016/j.actamat.2018.10.032 ↗
7. A microstructural based creep model applied to alloy 71810.1016/j.ijplas.2017.11.003 ↗
8. An intermediate temperature creep model for Ni-based superalloys10.1016/j.ijplas.2015.12.008 ↗
9. Microstructure based creep constitutive model for precipitation strengthened alloys: theory and application10.1179/174328408X369348 ↗
10. Creep and creep modelling of a multimodal nickel-base superalloy10.1016/j.actamat.2010.08.035 ↗
11. Kinetics of flow and strain-hardening10.1016/0001-6160(81)90112-7 ↗
12. Laws for work-hardening and low-temperature creep10.1115/1.3443340 ↗
13. Dislocation-density-related constitutive modeling
14. Grain boundary sliding in the presence of grain boundary precipitates during transient creep10.1007/BF02649087 ↗
15. Creep deformation of materials in light water reactors (LWRs), in: mater. Ageing Degrad
16. Kassner · 2015 · 233
17. Nucleation of creep cavity
18. Crack and cavity nucleation at interfaces during creep
19. A void growth model of multiaxial power-law creep rupture involving the void shape changes10.1016/j.ijmecsci.2018.05.011 ↗
20. Dependence of creep fracture of Inconel 718 on grain boundary precipitates10.1016/S1359-6454(96)00399-0 ↗
21. Effect of post processing on the creep performance of laser powder bed fused Inconel 718
22. Continuous cavity nucleation and creep ductility10.1016/0036-9748(85)90224-8 ↗
23. Theory of intergranular creep cavity nucleation, growth and interaction10.1016/0956-7151(90)90302-W ↗
24. A simplified model for creep induced grain boundary cavitation validated by multiple cavity growth simulations10.1016/j.commatsci.2012.01.033 ↗
25. Microstructure and creep anisotropy of Inconel 718 alloy processed by selective laser melting10.1016/j.msea.2020.140583 ↗
26. Additive manufacturing of metals10.1016/j.actamat.2016.07.019 ↗
27. Creep embrittlement by segregation of impurities
28. High-temperature mechanical properties of alloy 718 produced by laser powder bed fusion with different processing parameters
29. Review on powder-bed laser additive manufacturing of Inconel 718 parts10.1177/0954405415619883 ↗
30. A simple model for dislocation behavior, strain and strain rate hardening evolution in deforming aluminum alloys10.1016/S0749-6419(01)00015-8 ↗
31. Solute strengthening of both mobile and forest dislocations: the origin of dynamic strain aging in fcc metals10.1016/j.actamat.2008.04.027 ↗
32. Creep of second phase particles strengthened materials
33. A physics-based crystallographic modeling framework for describing the thermal creep behavior of Fe-Cr alloys10.1007/s11661-017-4011-3 ↗
34. Selective laser melting additive manufacturing of Inconel 718 superalloy parts: densification, microstructure and properties10.1016/j.jallcom.2013.09.171 ↗
35. Creep and stress rupture
36. Diffusional growth of creep cavities
37. Constrained growth of creep cavities
38. Creep damage mechanics
39. Study on microstructure and mechanical properties of laser rapid forming Inconel 71810.1016/j.msea.2007.05.079 ↗
40. Superalloys
41. Towards creep property improvement of selective laser melted Ni-based superalloy IN738LC
42. Creep behavior of the inconel 718 superalloy10.4028/www.scientific.net/DDF.326-328.509 ↗
43. Creep deformation of alloy 718
44. Short-term creep behavior of an additive manufactured non-weldable Nickel-base superalloy evaluated by slow strain rate testing10.1016/j.actamat.2019.08.034 ↗
45. Investigations of γ′ γ″ and δ precipitates in heat-treated Inconel 718 alloy fabricated by selective laser melting10.1016/j.matchar.2018.01.006 ↗
46. Determining volume fractions of γ, γ′, γ″, δ, and MC-carbide phases in Inconel 718 as a function of its processing history using an advanced neutron diffraction procedure10.1016/j.msea.2020.139228 ↗
47. Solidification of Nb-bearing superalloys: part I. reaction requences10.1007/s11661-998-0319-3 ↗
48. Metastable carbides and their impact on recrystallisation in IN738LC processed by selective laser melting
49. FRIEDEL · 1964 · 104
50. Computer simulation of phase transformation and plastic deformation in IN718 superalloy: microstructural evolution during precipitation10.1016/j.actamat.2013.10.069 ↗
51. Aging effects on the microstructure and creep behavior of Inconel 718 superalloy10.1016/j.msea.2008.04.097 ↗
52. B. Marty, J.Y. Guedou, P. Gergaud, J.L. Lebrun, Recrystallization and work-hardening prediction during forging process of Inconel 718, (2012) 331–342. doi:10.7449/1997/superalloys_1997_331_342.10.7449/1997/Superalloys_1997_331_342 ↗
53. Superior creep strength of a nickel-based superalloy produced by selective laser melting10.1016/j.msea.2016.07.061 ↗
54. Microstructural characteristics of forged and heat treated Inconel-718 disks10.1016/j.matdes.2013.06.004 ↗
55. Laves phase control of Inconel 718 alloy using quasi-continuous-wave laser additive manufacturing10.1016/j.matdes.2017.03.004 ↗
56. Modelling interfacial energies in metallic systems10.4028/www.scientific.net/MSF.473-474.1 ↗
57. The influence of vacancies diffusion-induced dislocation climb on the creep and plasticity behaviors of nickel-based single crystal superalloy10.1016/j.commatsci.2014.12.035 ↗
58. Correlations for diffusion constants10.1016/0001-6160(80)90092-9 ↗
59. A homogenized primary creep model of nickel-base superalloys and its application to determining micro-mechanistic characteristics10.1016/j.ijplas.2018.06.014 ↗
60. First-principles investigations of effects of solute elements on stability and electronic structure of laves phase/matrix interface in Ni-based superalloys10.1016/j.jpcs.2019.109166 ↗