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首页> 外文期刊>Materials Science and Engineering >Influence of the rolling direction on the microstructure, mechanical, anisotropy and gamma rays shielding properties of an Al-Cu-Li-Mg-X alloy
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Influence of the rolling direction on the microstructure, mechanical, anisotropy and gamma rays shielding properties of an Al-Cu-Li-Mg-X alloy

机译：轧制方向对Al-Cu-Li-Mg-X合金的组织，力学性能，各向异性和γ射线屏蔽性能的影响

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摘要

The impact of different rolling orientations (0°, 45° and 90°) on the microstructure, mechanical, in-plane anisotropy (IPA) and gamma rays (γ-rays) shielding properties of a lately developed Al-Cu-Li-Mg-X (X = Mn, Zr, Zn) alloy was investigated. The results showed that rolling along several directions corresponded to distinctive microstructures, which considerably affected the properties. The main strengthening phases in the alloy were δ'(Al3Li), Al3(Zr,Li) and T1(Al2CuLi), while the strengthening effect of the T1precipitates was predominant. The main precipitates were δ'(Al3Li), minor Al3(Zr,Li) and coarse T1(Al2CuLi) phases when rolled along the 0° direction, a large amount of fine T1(Al2CuLi) phase with few δ'(Al3Li) and Al3(Zr,Li) precipitates by rolling along the 45°direction, besides, a large amount of the Al3(Zr,Li) phase with minor δ'(Al3Li) in the alloy rolled along the 90° direction. The alloy rolled along the 90° orientation exhibited the appropriate isotropic mechanical behavior, which was caused by the homogeneously distributed dislocations that produced a homogeneous dispersion of the strengthening precipitates in the three tensile angles. In addition, the shielding property showed different screening ratios when varying the rolling direction. The 90° rolling direction presented the most desirable shielding property.
机译：不同滚动方向（0°，45°和90°）对最近开发的Al-Cu-Li-Mg的微观结构，机械各向异性，面内各向异性（IPA）和伽马射线（γ射线）屏蔽性能的影响研究了-X（X = Mn，Zr，Zn）合金。结果表明，沿几个方向滚动对应于独特的微观结构，这对性能产生了很大影响。合金中的主要强化相为δ'（Al3Li），Al3（Zr，Li）和T1（Al2CuLi），而T1析出物的强化作用最为明显。沿0°方向滚动时，主要析出物为δ'（Al3Li），次要Al3（Zr，Li）和粗T1（Al2CuLi）相，大量细T1（Al2CuLi）细相，少量δ'（Al3Li）和Al3（Zr，Li）沿45°方向滚动析出，此外，沿90°方向滚动的合金中还有大量δ'（Al3Li）较小的Al3（Zr，Li）相。沿90°取向轧制的合金表现出适当的各向同性力学行为，这是由均匀分布的位错引起的，该位错在三个拉伸角上产生了强化沉淀的均匀分散。另外，当改变轧制方向时，屏蔽性能显示出不同的屏蔽率。 90°滚动方向呈现出最理想的屏蔽性能。

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  • 来源
    《Materials Science and Engineering》 |2018年第8期|129-137|共9页
  • 作者

    Aboubakr Medjahed; Houssameddine Moula; Abdeldjalil Zegaoui; Mehdi Derradji; Abdelkhalek Henniche; Ruizhi Wu; Legan Hou; Jinghuai Zhang; Milin Zhang;

  • 作者单位

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University,Laboratoire Génie des Matériaux, École Militaire Polytechnique;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

    Laboratoire Génie des Matériaux, École Militaire Polytechnique;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University,College of Science, Heihe University,Key Laboratory of Lightweight and High Strength Structural Materials of Jiangxi Province, Nanchang University;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

    Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University;

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  • 正文语种 eng
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  • 关键词

    Al-Li-Cu-Mg-X (X = Mn, Zr, Zn) alloy; In-plane anisotropy (IPA); Rolling direction; Tensile angles machining; Gamma rays (γ-rays) shielding;

    机译：Al-Li-Cu-Mg-X（X = Mn;Zr;Zn）合金;面内各向异性（IPA）;滚动方向;拉伸角加工;伽马射线（γ射线）屏蔽;

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