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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Formation of a metastable fcc phase and high Mg solubility in the Ti-Mg system by mechanical alloying
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Formation of a metastable fcc phase and high Mg solubility in the Ti-Mg system by mechanical alloying

机译：通过机械合金化在Ti-Mg系统中形成亚稳态FCC相和高Mg溶解度

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摘要

Titanium and magnesium elemental powders were processed by mechanical alloying to synthesize the nominal TixMg(100-x) (x = 100, 75, 50, 25 and 0 at.%) compositions. As a result, the solid solubility was successfully extended and nanostructured materials with a metastable fcc phase were obtained. The lattice parameter of this phase increased with the increment in the Mg content. Pure Ti showed the coexistence of the Ti (fcc) and Ti (hcp) phases. The Ti75Mg25 and Ti50Mg50 compositions revealed a complete phase transformation to the fcc phase, while the Ti25Mg75 composition presented a coexistence of Ti-Mg (fcc) and Mg (hcp) phases. The metastable fcc phase was formed owing to the partial dislocation accumulation caused by the heavy plastic deformation during the ball milling process. (C) 2020 Elsevier B.V. All rights reserved.
机译：通过机械合金化加工钛和镁元素粉末，以合成标称Tixmg（100-x）（x = 100,75,50,25和0.％）组合物。 结果，获得固体溶解度并获得具有亚稳态FCC阶段的纳米结构材料。 该阶段的晶格参数随Mg含量的增量而增加。 纯Ti显示Ti（FCC）和Ti（HCP）阶段的共存。 Ti75mg25和Ti50mg50组合物揭示了对FCC阶段的完全相变化，而Ti25mg75组合物呈现Ti-Mg（FCC）和Mg（HCP）相的共存。 由于球磨过程中的重度塑性变形引起的部分位错累积而形成亚稳FCC阶段。 （c）2020 Elsevier B.V.保留所有权利。

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