| METALS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
| Novel α-Al(MnCr)Si Dispersion Strengthened Al-Mg-Si-Cu Alloy with Extraordinary Recrystallization Resistance |
| WANG Xiaoguo1,2, QIN Jian2,3,*, LIU Fangzhen2,3, NAGAUMI Hiromi 2,3
|
1 College of Agricultural Engineering, Shanxi Agricultural University, Taigu 030801, Shanxi, China
2 High Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, Jiangsu, China
3 Shagang School of Iron and Steel, Soochow University, Suzhou 215021, Jiangsu, China |
|
|
|
|
Abstract In this work, the commercial 6061 alloy and a Mn/Cr micro-alloyed Al-Mg-Si-Cu (denoted as HSW-1 alloy) were subjected to thermal deformation treatment under different conditions (deformation temperature:300, 400, 500 ℃; strain rate:0.01, 0.1, 1, 10 s-1; true strain:1.2) to study the microstructure evolution of the deformed alloys during solution and aging heat treatments. TEM observation confirmed that a large number of nano-scale α-Al(MnCr)Si dispersiods were uniformly distributed in HSW-1 alloy. Then quasi-in-situ EBSD analysis was used to characterize the microstructure evolution and count the distribution of misorientation distribution as well as sub-grain size changes of the two deformed alloys during different soaking times at 560 ℃. The results showed that the dispersiods could significantly improve the recrystallization resistance of Al-Mg-Si-Cu alloy, maintain the deformation microstructure and obtain high-strength alloys. Finally, theoretical analysis was applied to propose a control model for the microstructure of the two deformed alloys after T6 heat treatment. The microstructure composition after heat treatment can be precisely regulated by adjusting the deformation parameters, that is, deformation temperature and strain rates, and the experimental data effectively support the feasibility of the model.
|
|
Published:
Online: 2023-12-19
|
|
|
| Fund:National Natural Science Foundation of China (U1864209),Shanxi Province Key Research and Development Plan Project(201903D211002), and Shanxi Agricultural University Doctorat (SXBYKY2021021,2020BQ80). |
|
|
1 Ding L, Jia Z, Nie J F, et al. Acta Materialia, 2018, 145, 437.
2 Li Y J, Muggerud A M F, Olsen A, Furu T. Acta Materialia, 2012, 60, 1004.
3 Liu C L, Du Q, Parson N C, et al. Scripta Materialia, 2018, 152, 59.
4 Qin J, Zhang Z, Chen X G. Metallurgical and Materials Transactions A, 2016, 7, 4694.
5 Kenyon M, Robson J, Fellowes J, et al. Advanced Engineering Materials, 2019, 21, 1800494.
6 Humphreys F J, Hatherly M. Recrystallization and related annealing phenomena, Second Edition, Elsevier, 2004.
7 Tang L, Peng X Y, Huang J W, et al. Materials Science & Engineering A, 2019, 754, 295.
8 Qian X, Parson N, Chen X G. Materials Science and Engineering A, 2019, 64, 138253.
9 Li C, Liu K, Chen X G. Journal of Materials Science & Technology, 2020, 39, 135.
10 Qian X M, Parson N, Chen X G. Journal of Materials Science & Techno-logy, 2020, 52, 189.
11 Li Z, Qin J, Zhang H, et al. Metallurgical and Materials Transactions A, 2021, 52(8), 3204.
12 Liu F Z, Qin J, Li Z, et al. Journal of Materials Research and Technology, 2021, 14, 3134.
13 Lodgaard L, Ryum N. Materials Science and Engineering A, 2000, 283(1), 14452.
14 Zhang G, Nagaumi H, Han Y, et al. Materials Science Forum, 2016, 877, 172.
15 Li C, Liu K, Chen X G. Journal of Materials Science and Technology, 2020, 39, 135.
16 Wang X G, Qin J, Nagaumi H, et al. Advances in Materials Science and Engineering, 2020, 2020, 12.
17 Wang X G, Qin J, Liu F Z, et al. Journal of Physics, 2022, 2206, 012004.
18 Barou F, Maurice C, Feppon J M, et al. International Journal of Materials Research, 2009, 1004, 516.
19 Huang Y, Humphreys F J. Acta Materialia, 2000, 48(8), 2017. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2023, Vol. 37 
