Load shuffling during creep deformation of an additively manufactured AlCuMnZr alloy
Source abstract
Abstract
The high-temperature deformation behavior of an additively manufactured Al-Cu-Mn-Zr alloy is evaluated in the as-fabricated and heat-treated states using traditional ex-situ and in-situ neutron diffraction creep experiments performed at 300 °C. The dominant reinforcement phase in the alloy, θ-Al 2 Cu, despite its high volume fraction of ∼10%, does not provide load transfer strengthening during creep deformation. Instead, the lattice strain evolution suggests a new mechanism we term “load shuffling” wherein the initial load is transferred away from precipitate-free zones along the grain boundaries where most of the θ-Al 2 Cu particles are located to precipitate-strengthened grain interiors. Notwithstanding the lack of load transfer strengthening, the as-fabricated AM Al-Cu-Mn-Zr alloy still possesses improved creep resistance at 300 °C relative to a cast alloy with similar composition. The proposed load shuffling mechanism explains the lack of observed L1 2-Al 3 Zr strengthening at 300 °C and helps identify several strategies for improvement of elevated-temperature mechanical response of AM Al alloys.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Additive Manufacturing Materials and Processes · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Towards high-temperature applications of aluminium alloys enabled by additive manufacturing10.1080/09506608.2021.1951580 ↗
2. Research trends in laser powder bed fusion of Al alloys within the last decade
3. 3D printing of aluminium alloys: additive manufacturing of aluminium alloys using selective laser melting10.1016/j.pmatsci.2019.100578 ↗
4. New aluminum alloys specifically designed for laser powder bed fusion: a review10.3390/ma12071007 ↗
5. Change in microstructural characteristics of laser powder bed fused Al–Fe binary alloy at elevated temperature
6. Managing both high strength and thermal conductivity of a laser powder bed fused Al–2.5Fe binary alloy: effect of annealing on microstructure10.1016/j.msea.2020.140591 ↗
7. Microstructure and mechanical property evolution of additive manufactured eutectic Al-2Fe alloy during solidification and aging10.1016/j.jallcom.2021.163243 ↗
8. High-temperature strength sustained by nano-sized eutectic structure of Al–Fe alloy manufactured by laser powder bed fusion10.1016/j.msea.2022.142782 ↗
9. High-temperature mechanical properties of AlSi10Mg specimens fabricated by additive manufacturing using selective laser melting technologies (AM-SLM)
10. A high-strength heat-resistant Al−5.7Ni eutectic alloy with spherical Al3Ni nano-particles by selective laser melting10.1016/j.scriptamat.2021.114034 ↗
11. Microstructure and properties of a high temperature Al–Ce–Mn alloy produced by additive manufacturing10.1016/j.actamat.2020.07.014 ↗
12. Elevated temperature ductility dip in an additively manufactured Al-Cu-Ce alloy10.1016/j.actamat.2021.117285 ↗
13. Al-Cu-Ce(-Zr) alloys with an exceptional combination of additive processability and mechanical properties
14. Microstructure and properties of additively manufactured Al–Ce–Mg alloys10.1038/s41598-021-86370-4 ↗
15. A creep-resistant additively manufactured Al-Ce-Ni-Mn alloy10.1016/j.actamat.2022.117699 ↗
16. Comparing evolution of precipitates and strength upon aging of cast and laser-remelted Al–8Ce-0.2Sc-0.1Zr (wt.%)10.1016/j.msea.2022.142990 ↗
17. High performance aluminum–cerium alloys for high-temperature applications10.1039/C7MH00391A ↗
18. Modelling the creep behavior of an AlSi10Mg alloy produced by additive manufacturing
19. Compressive creep of AlSi10Mg parts produced by selective laser melting additive manufacturing technology
20. Effect of low-temperature annealing on creep properties of AlSi10Mg alloy produced by additive manufacturing: experiments and modeling10.3390/met11020179 ↗
21. Creep properties and microstructure evolution at 260–300°C of AlSi10Mg manufactured via laser powder-bed fusion10.1016/j.msea.2022.143075 ↗
22. Selective laser melting of Al and AlSi10Mg: parameter study and creep experiments
23. Microstructure and creep properties of cast near-eutectic Al–Ce–Ni alloys10.1016/j.msea.2021.142551 ↗
24. Aging- and creep-resistance of a cast hypoeutectic Al-6.9Ce-9.3Mg (wt.%) alloy10.1016/j.msea.2020.139398 ↗
25. Coarsening- and creep resistance of precipitation-strengthened Al-Mg-Zr alloys processed by selective laser melting10.1016/j.actamat.2020.02.008 ↗
26. Mechanisms of creep deformation in a rapidly solidified Al–Fe–V–Si alloy10.1016/j.msea.2021.140796 ↗
27. Steady state and transient creep properties of an aluminum alloy reinforced with alumina fibers10.1016/0956-7151(92)90348-I ↗
28. Threshold stress and load partitioning during creep of metal matrix composites10.1016/j.actamat.2008.01.037 ↗
29. Strengthening mechanisms in AlNiSc alloys containing Al3Ni microfibers and Al3Sc nanoprecipitates10.1016/j.actamat.2018.10.059 ↗
30. Load partition during hot deformation of AlSi12 and AlSi10Cu6Ni2 alloys: a quantitative evaluation of the stiffness of Si networks10.1007/s10853-020-05023-5 ↗
31. Dislocation-θ′ (Al2Cu) interactions during creep deformation of an Al-Cu alloy10.1016/j.scriptamat.2022.114739 ↗
32. Crystallographic orientation-dependent strain hardening in a precipitation-strengthened Al-Cu alloy10.1016/j.actamat.2020.116577 ↗
33. An investigation of the isothermal creep response of Al-based composites by neutron diffraction10.1016/S0921-5093(00)00762-0 ↗
34. Model-neutron diffraction strain measurement comparisons for steady state creep of metal matrix composites10.1016/S0921-5093(00)00678-X ↗
35. A neutron diffraction study of creep and damage occurrence in an A359/SiC composite10.1016/S0921-5093(01)01843-3 ↗
36. An additively manufactured AlCuMnZr alloy microstructure and tensile mechanical properties10.1016/j.mtla.2020.100758 ↗
37. Microstructural evolution and strengthening mechanisms in a heat-treated additively manufactured Al–Cu–Mn–Zr alloy10.1016/j.msea.2022.142928 ↗
38. First in situ lattice strains measurements under load at VULCAN10.1007/s11661-010-0495-9 ↗
39. An · 2012
40. Criteria for developing castable, creep-resistant aluminum-based alloys – a review10.3139/146.101249 ↗
41. Courtney · 2005
42. Frost · 1982
43. Effect of grain-boundary θ-Al2Cu precipitates on tensile and compressive creep properties of cast Al–Cu–Mn–Zr alloys10.1016/j.msea.2022.142946 ↗
44. Grain refinement effect on the hot-tearing resistance of higher-temperature Al–Cu–Mn–Zr alloys10.3390/met10040430 ↗
45. Repurposing the θ-Al2Cu phase to simultaneously increase the strength and ductility of an additively manufactured Al-Cu alloy
46. Interface diffusion-induced creep in metal matrix particulate composites under triaxial loading10.1007/s00707-017-1832-5 ↗
47. Geometric factors affecting the internal stress distribution and high temperature creep rate of discontinuous fiber reinforced metals10.1016/0956-7151(90)90306-2 ↗
48. Grain boundary sliding revisited: developments in sliding over four decades10.1007/s10853-006-6476-0 ↗
49. Impact of microstructural stability on the creep behavior of cast Al–Cu alloys10.1016/j.msea.2019.138697 ↗
50. Modeling the creep threshold stress due to climb of a dislocation in the stress field of a misfitting precipitate10.1016/j.actamat.2011.04.044 ↗
51. 3D printing of high-strength aluminium alloys10.1038/nature23894 ↗
52. A solution to the hot cracking problem for aluminium alloys manufactured by laser beam melting10.1016/j.actamat.2020.07.015 ↗
53. A novel method to 3D-print fine-grained AlSi10Mg alloy with isotropic properties via inoculation with LaB6 nanoparticles
54. Cavitation-resistant intergranular precipitates enhance creep performance of θ′-strengthened Al-Cu based alloys10.1016/j.actamat.2022.117788 ↗
55. Improving creep resistance of Al-12wt% Ce alloy by microalloying with Sc10.1016/j.scriptamat.2021.113838 ↗