Control mechanism of thermo-mechanical treatment on microstructure and mechanical properties of Al-Cu-Mg alloy

被引：0
|
作者：
Wang C. [1 ]
Liu H. [2 ]
Zheng Y. [2 ]
Wang K. [1 ]
Chen Z. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Central South University, Changsha
[2] Department of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2024年 / 34卷 / 01期
关键词：
Al-Cu-Mg alloy; fatigue crack growth rate; microstructure; tensile mechanical property; thermo-mechanical treatment;
D O I：
10.11817/j.ysxb.1004.0609.2023-44378
中图分类号：
学科分类号：
摘要：
The effects of novel thermo-mechanical treatment (NTMT) process on the microstructure and macroscopic properties of Al-Cu-Mg alloy were investigated by means of X-ray diffractometer(XRD), transmission electron microscope (TEM), tensile mechanical properties test and fatigue crack growth rate test. The results show that the NTMT process can enable the mechanical properties of Al-Cu-Mg alloy achieve a good combination of strength and plasticity. Using solution hot rolling with 25% reduction, the asymmetric cryorolling with 30% reduction (r2) and the artificial aging at 100 ℃ for 6 h, the elongation is 10.1%, and the tensile strength and yield strength of Al-Cu-Mg alloy are 517.2 MPa and 448.3 MPa, respectively, which are 74.8 MPa and 98.6 MPa higher than those of the conventional T6 Al-Cu-Mg alloy. The NTMT process causes a large number of dislocation tangles and small S phases in the alloy. The high-strength Goss texture and a large number of shear textures improve the fatigue performance of the alloy by affecting the deflection of fatigue cracks. © 2024 Central South University of Technology. All rights reserved.
引用
收藏
页码：5 / 62
页数：57
相关论文
共 45 条
  • [1] LIN B, LIN C H, FAN T, Et al., Effect of ultrasound vibration and pressure coupling field on function mechanism and microstructure of Al-Cu alloy, The Chinese Journal of Nonferrous Metals, 31, 7, pp. 1818-1826, (2021)
  • [2] ZANG J X, CHEN J Z, HAN K, Et al., Research progress and development tendency of aeronautical aluminum alloys, Materials China, 41, 10, pp. 769-777, (2022)
  • [3] ZHANG L J., Study on application and development trend of aerospace high strength aluminum alloy materials, Advanced Materials Industry, 3, pp. 7-11, (2021)
  • [4] XING G H, WANG X P, LI X Y, Et al., Review of application of aluminum alloy material in building structures, Structural Engineers, 37, 5, pp. 214-221, (2021)
  • [5] DENG Y L, ZHANG X M., Development of aluminium and aluminium alloy, The Chinese Journal of Nonferrous Metals, 29, 9, pp. 2115-2141, (2019)
  • [6] YAN H, LI H, SI Y, Et al., Effects of trace Sc and Zr and thermo mechanical treatment on microstructure and properties of Al-Mg-Si alloy, Heat Treatment of Metals, 42, 11, pp. 7-13, (2017)
  • [7] ZHAO B, ZHAN Y, TANG H., High-temperature properties and microstructural evolution of Al-Cu-Mn-RE (La/Ce) alloy designed through thermodynamic calculation, Materials Science and Engineering A, 758, pp. 7-18, (2019)
  • [8] LIU J, YAO P, ZHAO N, Et al., Effect of minor Sc and Zr on recrystallization behavior and mechanical properties of novel Al-Zn-Mg-Cu alloys, Journal of Alloys and Compounds, 657, pp. 717-725, (2016)
  • [9] ZHONG X X, YANG Z G, ZHANG Y, Et al., Microstructure and mechanical property evolutions of 2A12 aluminum alloy subjected to high pressure torsion and its fracture behavior, The Chinese Journal of Nonferrous Metals, 32, 8, pp. 2173-2184, (2022)
  • [10] AFIFI M A, WANG Y C, LANGDON T G., Effect of dynamic plastic deformation on the microstructure and mechanical properties of an Al-Zn-Mg alloy, Materials Science and Engineering A, 784, (2020)
12345