Abstract Nowadays the investigation of new lightweight alloys based on titanium aluminides is of great interest. Various low-density dispersion-strengthening additives are used for their synthesis. In this work Ti–Al–Mg lightweight alloy was synthesized using the methods of layer-by-layer combustion and thermal explosion. Relative sample elongation, combustion velocity, and maximum combustion temperature of Ti–Al–Mg system depend on the initial temperature and Mg presence. Phase analysis of the synthesized products with or without mechanical activation of the initial mixture reveals the existence of γ-TiAl, α2-TiAl3, Ti3Al, MgO phases, and γ-TiAl, α2-TiAl3, TiAl2, MgO, and α−Ti phases, respectively. The products synthesized by the thermal explosion mode from mechanically activated mixtures, preliminarily preheated to a temperature above 250 °C, contain the ternary Al18Ti2Mg3 phase. Mg shifts the reaction of Ti and Al to lower temperatures.

中文翻译：

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镁对初始温度和机械活化对 Ti-Al-Mg 体系燃烧合成的影响

摘要 目前，基于铝化钛的新型轻质合金的研究备受关注。各种低密度分散强化添加剂用于它们的合成。在这项工作中，使用逐层燃烧和热爆炸的方法合成了 Ti-Al-Mg 轻质合金。Ti-Al-Mg 系统的相对样品伸长率、燃烧速度和最高燃烧温度取决于初始温度和 Mg 的存在。对初始混合物机械活化或未机械活化的合成产物的相分析表明存在 γ-TiAl、α2-TiAl3、Ti3Al、MgO 相和 γ-TiAl、α2-TiAl3、TiAl2、MgO 和 α-Ti 相， 分别。由机械活化混合物通过热爆炸方式合成的产品，初步预热至250°C以上的温度，含有三元 Al18Ti2Mg3 相。Mg 将 Ti 和 Al 的反应转移到较低的温度。