Improving heat resistance of Al–Cu–Li alloy with the addition of Sc and Si
Tóm tắt
Al–Cu–Li alloys are important third-generation aluminum–lithium alloys in the aerospace field; however, they suffer from a service temperature below 100°C. In this work, we propose a new strategy for improving the heat resistance of Al–Cu–Li alloys at 200–300°C by promoting the nucleation of θ′ precipitates after dissolving T1 precipitates during thermal exposure with the minor addition of Sc and Si. During thermal exposure at 200–300°C, numerous nanoprecipitates of θ′ nucleate after dissolving some T1 precipitates in the minor-alloyed Al–Cu–Li alloy with Sc and Si, exhibiting high thermal stability. By contrast, the θ′ phase rapidly coarsens in the Al–Cu–Li alloy in the absence of Sc and Si additions. The minor-alloyed Al–Cu–Li alloy has a tensile strength of ~154 MPa and elongation of 9.2% at 300°C. Therefore, the heat-resistance performance of Al–Cu–Li alloy with Sc and Si microalloying is enhanced at 200–300°C, exhibiting considerable progress in both high-temperature strength and specific strength compared with those of commercial heat-resistant 2618 and 2219 alloys.
Tài liệu tham khảo
Zhu Y, Poplawsky JD, Li S, et al. Localized corrosion at nm-scale hardening precipitates in Al–Cu–Li alloys. Acta Mater, 2020, 189: 204–213
Rioja RJ. Fabrication methods to manufacture isotropic Al–Li alloys and products for space and aerospace applications. Mater Sci Eng-A, 1998, 257: 100–107
Williams JC, Starke Jr. EA. Progress in structural materials for aerospace systems. Acta Mater, 2003, 51: 5775–5799
Prasad NE, Gokhale A, Wanhill RJH. Aluminum-Lithium Alloys, Oxford: Butterworth-Heinemann, 2013
Araullo-Peters V, Gault B, de Geuser F, et al. Microstructural evolution during ageing of Al–Cu–Li–x alloys. Acta Mater, 2014, 66: 199–208
Decreus B, Deschamps A, De Geuser F, et al. The influence of Cu/Li ratio on precipitation in Al–Cu–Li–x alloys. Acta Mater, 2013, 61: 2207–2218
Gumbmann E, De Geuser F, Sigli C, et al. Influence of Mg, Ag and Zn minor solute additions on the precipitation kinetics and strengthening of an Al–Cu–Li alloy. Acta Mater, 2017, 133: 172–185
Gumbmann E, Lefebvre W, De Geuser F, et al. The effect of minor solute additions on the precipitation path of an Al–Cu–Li alloy. Acta Mater, 2016, 115: 104–114
Wang XM, Li GA, Jiang JT, et al. Influence of Mg content on ageing precipitation behavior of Al–Cu–Li–x alloys. Mater Sci Eng-A, 2019, 742: 138–149
Rodgers BI, Prangnell PB. Quantification of the influence of increased pre-stretching on microstructure-strength relationships in the Al–Cu–Li alloy AA2195. Acta Mater, 2016, 108: 55–67
Liu F, Liu Z, Liu M, et al. Analysis of empirical relation between microstructure, texture evolution and fatigue properties of an Al–Cu–Li alloy during different pre-deformation processes. Mater Sci Eng-A, 2018, 726: 309–319
Wang XM, Shao WZ, Jiang JT, et al. Quantitative analysis of the influences of pre-treatments on the microstructure evolution and mechanical properties during artificial ageing of an Al–Cu–Li–Mg–Ag alloy. Mater Sci Eng-A, 2020, 782: 139253
Ma P, Zhan L, Liu C, et al. Strong stress-level dependence of creep-ageing behavior in Al–Cu–Li alloy. Mater Sci Eng-A, 2021, 802: 140381
Chen F, Zhan L, Gao T, et al. Creep aging properties variation and microstructure evolution for 2195 Al–Li alloys with various loading rates. Mater Sci Eng-A, 2021, 827: 142055
Zhou C, Zhan L, Liu C, et al. Dislocation density-mediated creep ageing behavior of an Al–Cu–Li alloy. J Mater Sci Tech, 2024, 174: 204–217
Kang SJ, Kim TH, Yang CW, et al. Atomic structure and growth mechanism of T1 precipitate in Al–Cu–Li–Mg–Ag alloy. Scripta Mater, 2015, 109: 68–71
Wang S, Yang X, Wang J, et al. Identifying the crystal structure of T1 precipitates in Al–Li–Cu alloys by ab initio calculations and HAADFSTEM imaging. J Mater Sci Tech, 2023, 133: 41–57
Kim K, Zhou BC, Wolverton C. First-principles study of crystal structure and stability of T1 precipitates in Al–Li–Cu alloys. Acta Mater, 2018, 145: 337–346
Ortiz D, Brown J, Abdelshehid M, et al. The effects of prolonged thermal exposure on the mechanical properties and fracture toughness of C458 aluminum-lithium alloy. Eng Fail Anal, 2006, 13: 170–180
Deschamps A, Garcia M, Chevy J, et al. Influence of Mg and Li content on the microstructure evolution of Al–Cu–Li alloys during long-term ageing. Acta Mater, 2017, 122: 32–46
Jiang B, Cao F, Wang H, et al. Effect of aging time on the microstructure evolution and mechanical property in an Al–Cu–Li alloy sheet. Mater Sci Eng-A, 2019, 740–741: 157–164
Chen K, Wu X, Cao Y, et al. Enhanced strength and ductility in an Al–Cu–Li alloy via long-term ageing. Mater Sci Eng-A, 2021, 811: 141092
Balducci E, Ceschini L, Messieri S, et al. Thermal stability of the lightweight 2099 Al–Cu–Li alloy: Tensile tests and microstructural investigations after overaging. Mater Des, 2017, 119: 54–64
Balducci E, Ceschini L, Messieri S, et al. Effects of overaging on microstructure and tensile properties of the 2055 Al–Cu–Li–Ag alloy. Mater Sci Eng-A, 2017, 707: 221–231
Liu S, Xu G, Li Y, et al. Detailed investigation on high temperature mechanical properties of AA2050 Al–Cu–Li alloys. Mater Sci Eng-A, 2022, 844: 143158
Yu X, Zhao Z, Shi D, et al. Enhanced high-temperature mechanical properties of Al–Cu–Li alloy through T1 coarsening inhibition and Ce-containing intermetallic refinement. Materials, 2019, 12: 1521
Gao YH, Yang C, Zhang JY, et al. Stabilizing nanoprecipitates in Al–Cu alloys for creep resistance at 300°C. Mater Res Lett, 2019, 7: 18–25
Gao YH, Cao LF, Yang C, et al. Co-stabilization of θ′-Al2Cu and Al3Sc precipitates in Sc-microalloyed Al–Cu alloy with enhanced creep resistance. Mater Today Nano, 2019, 6: 100035
Gao YH, Cao LF, Kuang J, et al. Solute repositioning to tune the multiple microalloying effects in an Al–Cu alloy with minor Sc, Fe and Si addition. Mater Sci Eng-A, 2021, 803: 140509
Jiang L, Rouxel B, Langan T, et al. Coupled segregation mechanisms of Sc, Zr and Mn at θ′ interfaces enhances the strength and thermal stability of Al–Cu alloys. Acta Mater, 2021, 206: 116634
Yang C, Zhang P, Shao D, et al. The influence of Sc solute partitioning on the microalloying effect and mechanical properties of Al–Cu alloys with minor Sc addition. Acta Mater, 2016, 119: 68–79
Shin D, Shyam A, Lee S, et al. Solute segregation at the Al/θ′-Al2Cu interface in Al–Cu alloys. Acta Mater, 2017, 141: 327–340
Chen Z. Microstructural evolution and ageing behaviour of the low Cu: Mg ratio Al–Cu–Mg alloys containing scandium and lithium. Scripta Mater, 2004, 50: 1067–1071
Liu L, Chen JH, Wang SB, et al. The effect of Si on precipitation in Al–Cu–Mg alloy with a high Cu/Mg ratio. Mater Sci Eng-A, 2014, 606: 187–195
Liang SS, Wen SP, Wu XL, et al. The synergetic effect of Si and Sc on the thermal stability of the precipitates in AlCuMg alloy. Mater Sci Eng-A, 2020, 783: 139319
Dorin T, De Geuser F, Lefebvre W, et al. Strengthening mechanisms of T1 precipitates and their influence on the plasticity of an Al–Cu–Li alloy. Mater Sci Eng-A, 2014, 605: 119–126
Dorin T, Deschamps A, Geuser FD, et al. Quantification and modelling of the microstructure/strength relationship by tailoring the morphological parameters of the T1 phase in an Al–Cu–Li alloy. Acta Mater, 2014, 75: 134–146
Gilmore DL, Starke Jr. EA. Trace element effects on precipitation processes and mechanical properties in an Al–Cu–Li alloy. Metall Mater Trans A, 1997, 28: 1399–1415
Nie JF, Muddle BC. Strengthening of an Al–Cu–Sn alloy by deformation-resistant precipitate plates. Acta Mater, 2008, 56: 3490–3501
Jiao ZB, Luan JH, Zhang ZW, et al. High-strength steels hardened mainly by nanoscale NiAl precipitates. Scripta Mater, 2014, 87: 45–48
Fragomeni JM, Hillberry BM. Determining the effect of microstructure and heat treatment on the mechanical strengthening behavior of an aluminum alloy containing lithium precipitation hardened with the δ′ Al3Li intermetallic phase. J Mater Eng Performance, 2000, 9: 428–440
Nairn KM, Gable BM, Stark R, et al. Monitoring the evolution of the matrix copper composition in age hardenable Al–Cu alloys. MSF, 2016, 519–521: 591–596
Teixeira JDC, Cram DG, Bourgeois L, et al. On the strengthening response of aluminum alloys containing shear-resistant plate-shaped precipitates. Acta Mater, 2008, 56: 6109–6122
Huang Y, Robson JD, Prangnell PB. The formation of nanograin structures and accelerated room-temperature theta precipitation in a severely deformed Al–4 wt.% Cu alloy. Acta Mater, 2010, 58: 1643–1657
Zhu AW, Csontos A, Starke Jr EA. Computer experiment on superposition of strengthening effects of different particles. Acta Mater, 1999, 47: 1713–1721
Li Y, Xu G, Peng X, et al. Effect of different aging treatment on high temperature properties of die-forged Al–5.87Zn–2.07Mg–2.42Cu alloy. Mater Charact, 2020, 164: 110239
Dai P, Luo X, Yang Y, et al. High temperature tensile properties, fracture behaviors and nanoscale precipitate variation of an Al–Zn–Mg–Cu alloy. Prog Nat Sci-Mater Int, 2020, 30: 63–73
Zhi H, Li J, Li W, et al. Simultaneously enhancing strength-ductility synergy and strain hardenability via Si-alloying in medium-Al FeMnAlC lightweight steels. Acta Mater, 2023, 245: 118611
Knipling KE, Dunand DC, Seidman DN. Criteria for developing ca-stable, creep-resistant aluminum-based alloys—A review. MEKU, 2006, 97: 246–265
Du Y, Chang YA, Huang B, et al. Diffusion coefficients of some solutes in fcc and liquid Al: Critical evaluation and correlation. Mater Sci Eng-A, 2003, 363: 140–151
Chen BA, Pan L, Wang RH, et al. Effect of solution treatment on precipitation behaviors and age hardening response of Al–Cu alloys with Sc addition. Mater Sci Eng-A, 2011, 530: 607–617
Nakayama M, Okuyama T, Miura Y. Interaction between θ′-Al2Cu and Al3Sc in the heterogeneous precipitation in an Al–Cu–Sc alloy. MSF, 2000, 331–337: 927–932
Zhang D, Wang J, Kong Y, et al. First-principles investigation on stability and electronic structure of Sc-doped θ′/Al interface in Al–Cu alloys. Trans Nonferrous Met Soc China, 2021, 31: 3342–3355