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Uncovering the influence of Cu on the thickening and strength of the δ′/θ′/δ′ nano-composite precipitate in Al–Cu–Li alloys

  • Metals & corrosion
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Abstract

Nanoscale δ′/θ′/δ′ composite precipitate, as another important strengthening phase in the latest generation of Al–Li alloys, exhibits excellent resistance to coarsening. Here, we propose two thickening models for an anomalous δ′/θ′/δ′ that is discovered recently, by analyzing various influencing factors, including the static energy barrier, aging temperature-dependent nucleation conditions, and the elastic distortion suffered during growth. It indicates that the thickness of the δ′/θ′/δ′ composite precipitate seems to depend on the nucleation of the δ′. At elevated aging temperatures, θ′ precipitates can grow and thicken rapidly until the δ′ nucleates on them. This is strikingly different from the dislocation-induced growth mechanism. Subsequently, we propose a vacuum-added methodology to accurately extract the interfacial energy. The results show that this nano-composite precipitate can realize supra-nanostructure in thickness at low aging temperatures due to the spontaneous nucleation of the δ′ upon the pre-precipitate θ′. Cu atoms segregated at the interface suppress the nucleation of the δ′, but release the lattice distortion to some extent. Using Griffith fracture model-assisted ab-initio uniaxial tensile tests, the cohesion strength and fracture process of this composite precipitate with and without Cu segregation have been captured. It indicates that the Cu atoms induced interfacial expansion and the fracture of strong Al–Al covalent bond, resulting in a reduction of fracture strength of this nano-composite precipitate.

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References

  1. Dorin T, Vahid A, Lamb J (2018) Chapter 11: aluminium lithium alloys. In: Lumley RN (ed) Fundamentals of aluminium metallurgy. Woodhead Publishing, Cambridge, pp 387–438. https://doi.org/10.1016/B978-0-08-102063-0.00011-4

    Chapter  Google Scholar 

  2. Jiang B, Wang HS, Yi DQ, Tian Y, Shen FH, Wang B, Liu HQ, Hu Z (2020) Effect of Ag addition on the age hardening and precipitation behavior in an Al–Cu–Li–Mg–Zn–Mn–Zr alloy. Mater Charact 162:110184. https://doi.org/10.1016/j.matchar.2020.110184

    Article  CAS  Google Scholar 

  3. Ma PP, Zhan LH, Liu CH, Wang Q, Li H, Liu DB, Hu ZG (2019) Pre-strain-dependent natural ageing and its effect on subsequent artificial ageing of an Al–Cu–Li alloy. J Alloys Compd 790:8–19. https://doi.org/10.1016/j.jallcom.2019.03.072

    Article  CAS  Google Scholar 

  4. Kim K, Zhou BC, Wolverton C (2018) First-principles study of crystal structure and stability of T1 precipitates in Al–Li–Cu alloys. Acta Mater 145:337–346. https://doi.org/10.1016/j.actamat.2017.12.013

    Article  CAS  Google Scholar 

  5. Gumbmann E, Lefebvre W, De Geuser F, Sigli C, Deschamps A (2016) The effect of minor solute additions on the precipitation path of an Al–Cu–Li alloy. Acta Mater 115:104–114. https://doi.org/10.1016/j.actamat.2016.05.050

    Article  CAS  Google Scholar 

  6. Miao J, Sutton S, Luo AA (2020) Microstructure and hot deformation behavior of a new aluminium–lithium–copper based AA2070 alloy. Mater Sci Eng A 777:139048. https://doi.org/10.1016/j.msea.2020.139048

    Article  CAS  Google Scholar 

  7. Duan SY, Wu CL, Gao Z, Cha LM, Fan TW, Chen JH (2017) Interfacial structure evolution of the growing composite precipitates in Al–Cu–Li alloys. Acta Mater 129:352–360. https://doi.org/10.1016/j.actamat.2017.03.018

    Article  CAS  Google Scholar 

  8. Duan SY, Le Z, Chen ZK et al (2016) Li-atoms-induced structure changes of Guinier–Preston–Bagaryatsky zones in AlCuLiMg alloys. Mater Charact 121:207–212. https://doi.org/10.1016/j.matchar.2016.09.037

    Article  CAS  Google Scholar 

  9. Yoshimura R, Konno TJ, Abe E, Hiraga K (2003) Transmission electron microscopy study of the early stage of precipitates in aged Al–Li–Cu alloys. Acta Mater 51:2891–2903. https://doi.org/10.1016/s1359-6454(03)00104-6

    Article  CAS  Google Scholar 

  10. Wang S, Zhang C, Li X, Huang H, Wang J (2020) First-principle investigation on the interfacial structure evolution of the δ’/θ’/δ’ composite precipitates in Al–Cu–Li alloys. J Mater Sci Technol 58:205–214. https://doi.org/10.1016/j.jmst.2020.03.065

    Article  Google Scholar 

  11. Terrones LAH, Monteiro SN (2007) Composite precipitates in a commercial Al–Li–Cu–Mg–Zr alloy. Mater Charact 58:156–161. https://doi.org/10.1016/j.matchar.2006.04.008

    Article  CAS  Google Scholar 

  12. Zheng YH, Liu YX, Wilson N et al (2020) Solute segregation induced sandwich structure in Al–Cu(–Au) alloys. Acta Mater 184:17–29. https://doi.org/10.1016/j.actamat.2019.11.011

    Article  CAS  Google Scholar 

  13. Bourgeois L, Zhang Y, Zhang Z, Chen Y, Medhekar NV (2020) Transforming solid-state precipitates via excess vacancies. Nat Commum 11(1):1248. https://doi.org/10.1038/s41467-020-15087-1

    Article  CAS  Google Scholar 

  14. Bourgeois L, Dwyer C, Weyland M, Nie J-F, Muddle BC (2011) Structure and energetics of the coherent interface between the θ′ precipitate phase and aluminium in Al–Cu. Acta Mater 59:7043–7050. https://doi.org/10.1016/j.actamat.2011.07.059

    Article  CAS  Google Scholar 

  15. Griffith AA (1921) The phenomena of rupture and flow in solids. Philos Trans R Soc Lond Ser A Contain Pap Math Phys Character 221:163–198. https://doi.org/10.1098/rsta.1921.0006

    Article  Google Scholar 

  16. Kresse G, Furthmüller J (1996) Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set. Phys Rev B 54:11169–11186. https://doi.org/10.1103/PhysRevB.54.11169

    Article  CAS  Google Scholar 

  17. Perdew JP, Burke K, Ernzerhof M (1996) Generalized gradient approximation made simple. Phys Rev Lett 77:3865–3868. https://doi.org/10.1103/PhysRevLett.77.3865

    Article  CAS  Google Scholar 

  18. Monkhorst HJ, Pack JD (1976) Special points for Brillouin-zone integrations. Phys Rev B 13:5188–5192. https://doi.org/10.1103/PhysRevB.13.5188

    Article  Google Scholar 

  19. Vaithyanathan V, Wolverton C, Chen LQ (2004) Multiscale modeling of θ′ precipitation in Al–Cu binary alloys. Acta Mater 52:2973–2987. https://doi.org/10.1016/j.actamat.2004.03.001

    Article  CAS  Google Scholar 

  20. Wang Y, Liu ZK, Chen LQ, Wolverton C (2007) First-principles calculations of β″-Mg5Si6/α-Al interfaces. Acta Mater 55:5934–5947. https://doi.org/10.1016/j.actamat.2007.06.045

    Article  CAS  Google Scholar 

  21. Butler KT, Gautam GS, Canepa P (2019) Designing interfaces in energy materials applications with first-principles calculations. NPJ Comput Mater 5:19. https://doi.org/10.1038/s41524-019-0160-9

    Article  Google Scholar 

  22. Spowage AC, Bray S (2010) Characterization of nanoprecipitation mechanisms during isochronal aging of a pseudo-binary Al-8.7 at. pct Li alloy. Metall Mater Trans A 42:227–230. https://doi.org/10.1007/s11661-010-0498-6

    Article  CAS  Google Scholar 

  23. Neibecker P, Leitner M, Kushaim M, Boll T, Anjum D, Ta A-K, Haider F (2017) L12 ordering and δ′ precipitation in Al–Cu–Li. Sci Rep 7:3254. https://doi.org/10.1038/s41598-017-03203-z

    Article  CAS  Google Scholar 

  24. Okuda H, Tanaka I, Osamura K, Osawa M, Amemiya Y (1997) Simultaneous SAS and 100 experiments on phase decomposition and reversion in Al–Li binary alloys. J AppI Cryst 30:586–591. https://doi.org/10.1107/S0021889897002409

    Article  CAS  Google Scholar 

  25. Yoshimura R, Konno TJ, Abe E, Hiraga K (2003) Transmission electron microscopy study of the evolution of precipitates in aged Al–Li–Cu alloys: the θ′ and T1 phases. Acta Mater 51:4251–4266. https://doi.org/10.1016/s1359-6454(03)00253-2

    Article  CAS  Google Scholar 

  26. Biswas A, Siegel DJ, Wolverton C, Seidman DN (2011) Precipitates in Al–Cu alloys revisited: atom-probe tomographic experiments and first-principles calculations of compositional evolution and interfacial segregation. Acta Mater 59:6187–6204. https://doi.org/10.1016/j.actamat.2011.06.036

    Article  CAS  Google Scholar 

  27. Hui J, Wang L, Wang B (2020) Theoretical study of the effects of alloying elements on Cu nanotwins. Sci China Phys Mech Astron 63:104612. https://doi.org/10.1007/s11433-020-1543-8

    Article  CAS  Google Scholar 

  28. Zhao DD, Li YJ (2018) Carbon segregation at Σ3{1 1 2} grain boundaries in silicon. Comput Mater Sci 143:80–86. https://doi.org/10.1016/j.commatsci.2017.11.001

    Article  CAS  Google Scholar 

  29. Tian JZ, Zhao YH, Hou H, Han PD (2017) First-principles investigation of the structural, mechanical and thermodynamic properties of Al2Cu phase under various pressure and temperature conditions. Solid State Commun 268:44–50. https://doi.org/10.1016/j.ssc.2017.09.016

    Article  CAS  Google Scholar 

  30. Wang Y, Meng Y, Wang J, Zhang C, Huang H (2020) Mechanical properties of defective L12–Al3X (X = Sc, Lu) phase: a first-principles study. J Rare Earths 39:217–224. https://doi.org/10.1016/j.jre.2020.04.006

    Article  CAS  Google Scholar 

  31. Lazar P, Podloucky R (2008) Cleavage fracture of a crystal: density functional theory calculations based on a model which includes structural relaxations. Phys Rev B 78:10414. https://doi.org/10.1103/PhysRevB.78.104114

    Article  CAS  Google Scholar 

  32. Janisch R, Ahmed N, Hartmaier A (2010) Ab initio tensile tests of Al bulk crystals and grain boundaries: universality of mechanical behavior. Phys Rev B 81:184108. https://doi.org/10.1103/PhysRevB.81.184108

    Article  CAS  Google Scholar 

  33. Zhao DD, Løvvik OM, Marthinsen K, Li YJ (2018) Segregation of Mg, Cu and their effects on the strength of Al Σ5 (210)[001] symmetrical tilt grain boundary. Acta Mater 145:235–246. https://doi.org/10.1016/j.actamat.2017.12.023

    Article  CAS  Google Scholar 

  34. Khachaturyan AG, Lindsey TF, Morris JW (1988) Theoretical investigation of the precipitation of δ’ in Al–Li. Metall Mater Trans A 19:249–258. https://doi.org/10.1007/BF02652533

    Article  Google Scholar 

Download references

Acknowledgements

The authors would like to thank the helps from all lab mates at the Integrated Computational Materials Engineering (ICME) laboratory, Bei**g Institute of Technology, China. The funding support from the Key Laboratories at Bei**g Institute of Technology (funding#6142902180305, and #61409220124) is greatly acknowledged.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Bei**g Institute of Technology, Bei**g, 100081, China

    Shuo Wang, Chi Zhang, **n Li & Junsheng Wang

  2. Advanced Research Institute of Multidisciplinary Science, Bei**g Institute of Technology, Bei**g, 100081, China

    Junsheng Wang

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  1. Shuo Wang
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Correspondence to Junsheng Wang.

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Wang, S., Zhang, C., Li, X. et al. Uncovering the influence of Cu on the thickening and strength of the δ′/θ′/δ′ nano-composite precipitate in Al–Cu–Li alloys. J Mater Sci 56, 10092–10107 (2021). https://doi.org/10.1007/s10853-021-05894-2

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