Effects of the addition of Y in Mg-8Li-(1,3)Al alloy
Effects of the addition of Y in Mg-8Li-(1,3)Al alloy
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DOI：
10.1016/j.msea.2009.04.025
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发表时间：
2009-08-15
期刊：
影响因子：
6.4
通讯作者：
Zhang, Milin
中科院分区：
文献类型：
--
作者：
Wu, Ruizhi;Qu, Zhikun;Zhang, Milin
镁-8Li-Al(LA81)和镁-8Li-3Al(LA83)是最常用的镁锂合金。它们具有良好的综合力学性能。为了进一步提高合金的综合力学性能，在LA81和LA83合金中添加了Y。研究了合金的显微组织和力学性能。结果表明，La81和LA83合金中的Y对合金的组织有细化和球化作用。Al(2)Y相存在于α和β相的交界处。Y的加入导致合金中α相数量的减少。Y的加入改善了LA81和LA83合金的力学性能。延伸率的提高比强度的提高更明显。(C)2009爱思唯尔B.V.保留所有权利。
Mg-8Li-Al(LA81) and Mg-8Li-3Al(LA83) are the most commonly used magnesium-lithium alloys. They have good comprehensive mechanical properties. To improve comprehensive mechanical properties of the alloys further, Y was added into LA81 and LA83 alloys. The microstructures and the mechanical properties of the alloys were studied. Results show that, the Y in LA81 and LA83 alloys can refine and spheroidize the microstructure of alloys. Al(2)Y phase exists at the boundary between alpha and beta phases. The addition of Y leads to the decrease of the amount of alpha phase in alloys. The mechanical properties of LA81 and LA83 alloys are improved because of the Y addition. The improvement of elongation percentage is much more obvious than that of strength. (C) 2009 Elsevier B.V. All rights reserved.