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Deformational behavior of face-centered cubic (FCC) phase in high-pure titanium

机译：以高纯钛的面为中心立方（FCC）相的变形行为

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摘要

The deformation behavior of face-centered cubic (FCC) phase in annealed samples at room temperature was directly observed by Transmission electron microscope (TEM). It is found that FCC phase has excellent capacity of plastic deformation. Under cold-rolling, the FCC/HCP (hexagonal close-packed) phase interface slides and rotates, leading to deviation from the semi-coherent orientation relationship. The FCC phase has undergone various deformation modes such as shearing, bending, kinking and their combinations. With the increase of strain, the globularization of FCC phase is more remarkable, and bands are transformed into equiaxed grains. Kinking of FCC band structure under cold-rolling was first discovered in this work, which can lead to grain refinement and improve ductility. The globularization behavior of FCC phase is similar to that of α/β lamellar starting structure in titanium alloy at high temperature. This provides a new idea for the design of microstructure and properties of titanium and its alloys.
机译：通过透射电子显微镜（TEM）直接观察到室温下的朝向立方（FCC）相的变形行为。发现FCC阶段具有优异的塑性变形能力。在冷轧下，FCC / HCP（六边形封闭填充）相界面滑动并旋转，导致偏离半相干的方向关系。 FCC阶段经历了各种变形模式，如剪切，弯曲，扭结及其组合。随着菌株的增加，FCC阶段的球状化更显着，并且条带被转化为等轴晶粒。在这项工作中首次发现冷轧下FCC带结构的扭结，这可能导致晶粒细化并改善延展性。 FCC阶段的球间行为与高温下钛合金中α/β层状起动结构类似。这为钛及其合金的微观结构和性质设计提供了新的思路。

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  • 来源
    《Materials Science and Engineering》 |2021年第7期|140287.1-140287.9|共9页
  • 作者

    Fengmei Bai; Libo Yin; Wei Zhao; Hongwei Zhou; Meng Song; Yanchun Liu; Xianghua Liu;

  • 作者单位

    Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling (Annul University of Technology) Ma 'anshan 243002 PR China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110189 PR China;

    Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling (Annul University of Technology) Ma 'anshan 243002 PR China;

    Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling (Annul University of Technology) Ma 'anshan 243002 PR China;

    Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (Anhui University of Technology) Ministry of Education Ma anshan 243002 PR China School of Materials Science and Engineering Anhui University of Technology Maanshan 243002 PR China;

    Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Anhui University of Technology) Ministry of Education 243002 Maanshan PR China;

    Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling (Annul University of Technology) Ma 'anshan 243002 PR China;

    Anhui Province Key Laboratory of Metallurgical Engineering & Resources Recycling (Annul University of Technology) Ma 'anshan 243002 PR China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110189 PR China;

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  • 关键词

    High-purity ti; Phase transformation; Plastic deformation of FCC phase; Globularization; Kinking of FCC lamella;

    机译：高纯度ti;相变;FCC阶段的塑性变形;球状化;FCC薄片的扭结;

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