7475-T761航空铝合金的物相分析

Mao Hua Li, Yan Qing Yang, Chang Ping Tang, Zhi Long Chen, Jia Xuan Mo

科研成果: 期刊稿件文章同行评审

摘要

Microstructure of 7475-T761 aviation aluminum alloy was studied by means of transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), selective area electron diffraction (SAED), micro beam diffraction (μ-D), high resolution transmission electron microscopy (HRTEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM). The results show that the microstructure of the 7475-T761 aluminum alloy is mainly composed of dispersed phase, aging strengthening phase and impurity phase. The dispersed phase is E phase (Al18Cr2Mg3) with various morphology, and the η phase is easy to precipitate inhomogeneously at the E/Al interface. The aging strengthening phases are mainly composed of GPⅡ zones, η' phase and η phase. The impurity phases are mainly composed of Al7Cu2Fe, FeAl3 and Si-rich phases.

投稿的翻译标题Phase analysis of 7475-T761 aviation aluminum alloy
源语言繁体中文
页(从-至)68-75
页数8
期刊Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
42
9
DOI
出版状态已出版 - 25 9月 2021

关键词

  • 7475 aluminum alloy
  • Aging strengthening phase
  • Dispersed phase
  • Impurity phase

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