Microstructural evolution and corrosion mechanism of micro-alloyed 2024 (Zr, Sc, Ag) aluminum alloys

被引：28
作者：
Deng, Pan [1 ]
Mo, Wenfeng [1 ]
Ouyang, Zuoqiong [1 ]
Ling, Kai [1 ]
Luo, Binghui [1 ,2 ]
Bai, Zhenhai [1 ,2 ]
机构：
[1] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent South Univ, Key Lab Nonferrous Met Mat Sci & Engn, Minist Educ, Changsha 410083, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 224卷
关键词：
2024 aluminum alloy; Microalloying; Corrosion behaviors; Microstructure; Intermetallic particles; CU-MG ALLOY; MICROALLOYING ADDITIONS; MINOR SC; AL-ALLOY; BEHAVIOR; PRECIPITATION; PHASE; DEFORMATION; RESISTANCE; KINETICS;
D O I：
10.1016/j.corsci.2023.111476
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The 2024 aluminum alloy has excellent mechanical and low corrosion due to the existence of the high Cu levels, which shortens its service life. In this paper, we have systematically investigated the mechanism of the influence of three elements (Sc, Zr, and Ag) on the microstructure and corrosion behavior of 2024 aluminum alloy after microalloying. The results showed that microalloying treatment of 2024 aluminum alloy reduced the dendritic spacing of cast aluminum alloy; decreased the sizes of Cu-rich intermetallic particles (Cu-IMPs) within the peak aging of the T6 alloy to make their distribution more uniform; and changed the grain boundary phases (GBPs) and precipitate-free zones (PFZs) width of the T6 alloy. Microalloying treatment significantly changed the corrosion resistance of the alloy. Both Zr and Ag elements significantly improved the corrosion resistance of the alloy and reduced IGC depth and electrochemical corrosion rate, however, the Sc elements deteriorated the corrosion resistance of the alloy. Moreover, the corrosion mechanism of the alloy was also discussed in detail.
引用
收藏
页数：15
相关论文
共 75 条
  • [1] On the corrosion of a high solute Al-Zn-Mg alloy produced by laser powder bed fusion
    Babu, A. P.
    Choudhary, S.
    Griffith, J. C.
    Huang, A.
    Birbilis, N.
    [J]. CORROSION SCIENCE, 2021, 189
  • [2] On the role of Ag additions on the initial solute hardening and competitive precipitation of Al-Cu-Mg alloys
    Bai, Song
    Yi, Xinlei
    Liu, Zhiyi
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 945
  • [3] Effect of Sc addition on the microstructures and age-hardening behavior of an Al-Cu-Mg-Ag alloy
    Bai, Song
    Yi, Xinlei
    Liu, Guanhua
    Liu, Zhiyi
    Wang, Jian
    Zhao, Juangang
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 756 : 258 - 267
  • [4] The effect of silver on microstructural evolution in two 2xxx series Al-alloys with a high Cu:Mg ratio during ageing to a T8 temper
    Bakavos, D.
    Prangnell, P. B.
    Bes, B.
    Eberl, F.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 491 (1-2): : 214 - 223
  • [5] Effect of Mn/Mo incorporated oxide layer on the corrosion behavior of AA 2024 alloy
    Balaraju, J. N.
    Srinivasan, A.
    Yoganandan, G.
    Grips, V. K. William
    Rajam, K. S.
    [J]. CORROSION SCIENCE, 2011, 53 (12) : 4084 - 4092
  • [6] Application of hot forming cold die quenching for facilitating equal channel angular pressing of AA2024 aluminum alloy
    Barenji, A. Baghbani
    Eivani, A. R.
    Hasheminiasari, M.
    Park, N.
    Jafarian, H. R.
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 791 : 265 - 277
  • [7] Effect of high-temperature furnace treatment on the microstructure and corrosion behavior of NiCrBSi flame-sprayed coatings
    Bergant, Zoran
    Trdan, Uros
    Grum, Janez
    [J]. CORROSION SCIENCE, 2014, 88 : 372 - 386
  • [8] Electrochemical characteristics of intermetallic phases in aluminum alloys - An experimental survey and discussion
    Birbilis, N
    Buchheit, RG
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (04) : B140 - B151
  • [9] Corrosion of AA2024-T3 Part I. Localised corrosion of isolated IM particles
    Boag, A.
    Hughes, A. E.
    Glenn, A. M.
    Muster, T. H.
    McCulloch, D.
    [J]. CORROSION SCIENCE, 2011, 53 (01) : 17 - 26
  • [10] Corrosion-induced mechanical properties degradation of Al-Cu-Li (2198-T351) aluminium alloy and the role of side-surface cracks
    Charalampidou, Christina
    Dietzel, Wolfgang
    Zheludkevich, Mikhail
    Kourkoulis, Stavros K.
    Alexopoulos, Nikolaos D.
    [J]. CORROSION SCIENCE, 2021, 183
12345678