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首页> 外文期刊>Journal of Materials Engineering and Performance >Strengthening and Room Temperature Age-Softening of Super-Light Mg-Li Alloys
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Strengthening and Room Temperature Age-Softening of Super-Light Mg-Li Alloys

机译：超轻镁锂合金的强化和室温时效软化

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Extremely light (density ～1.46 g/cm~3) and highly formable Mg-Li alloys have been drawing research interest; however, their relatively low strength is discouraging, and thus, an issue to be addressed. This paper processes and evaluates four Mg-Li alloys: the first, a basic alloy with a nominal composition of Mg-11%Li-1%Al-0.5%Zn; the second, an alloy with only Be added to the first; the third, an alloy with only Sc added to the first; and the fourth, with both Be and Sc added to the first. This research achieves a high strength of ～240 MPa for Mg-Li alloys using the processes of solid solution treatment plus 90% heavy rolling. A subsequent natural aging process proceeded spontaneously and resulted in strength decay. Room temperature softening behavior is uncommon, but offers a convenient route for studying age-softening characteristics of metallic alloys.
机译：极轻（密度〜1.46 g / cm〜3）和高度可成形的Mg-Li合金引起了研究兴趣。然而，它们相对较低的强度令人沮丧，因此是要解决的问题。本文处理并评估了四种Mg-Li合金：第一种是标称成分为Mg-11％Li-1％Al-0.5％Zn的碱性合金;第二种是标称成分为Mg-11％Li-1％Al-0.5％Zn的基础合金。第二种，仅在第一种中添加一种合金。第三，仅添加Sc的合金。第四，将Be和Sc都添加到第一。通过固溶处理和90％的重轧工艺，本研究对Mg-Li合金实现了约240 MPa的高强度。随后的自然老化过程自发进行，导致强度下降。室温下的软化行为并不常见，但为研究金属合金的时效软化特性提供了一条方便的途径。

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