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首页> 外文期刊>Materials Science and Engineering >Effect of hot forging on microstructure and tensile properties of Ti-TiB based composites produced by casting
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Effect of hot forging on microstructure and tensile properties of Ti-TiB based composites produced by casting

机译：热锻对铸造Ti-TiB基复合材料组织和拉伸性能的影响

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摘要

Microstructure and mechanical behavior of near eutectic Ti-1.5 wt％ B and hypereutectic Ti-2B wt％ B composite materials obtained by casting have been investigated. Commercially pure titanium was used as a matrix material. Homogeneously distributed TiB whiskers were revealed in the as-cast composite materials. Multiple isothermal 2-D forging of the composites was carried out in the temperature range of the beta phase field. The hot forging led to effective alignment of boride whiskers while retaining a high aspect ratio. Tensile mechanical tests in as-cast and forged conditions were carried out at room and elevated temperatures. The composites demonstrated much higher strength in comparison with the matrix material without drastic ductility reduction. The effect of boride orientation and morphology on the tensile properties of the composite materials is discussed.
机译：研究了通过铸造获得的近共晶Ti-1.5 wt％B和过共晶Ti-2B wt％B复合材料的组织和力学性能。商业上纯钛用作基质材料。在铸态复合材料中发现了均匀分布的TiB晶须。在β相场的温度范围内对复合材料进行多次等温二维锻造。热锻导致硼化物晶须有效对准，同时保持高纵横比。在室温和高温下在铸态和锻造条件下进行拉伸机械测试。与基体材料相比，该复合材料显示出更高的强度，而不会大幅降低延展性。讨论了硼化物取向和形态对复合材料拉伸性能的影响。

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  • 来源
    《Materials Science and Engineering》 |2014年第15期|34-41|共8页
  • 作者

    V. Imayev; R. Gaisin; E. Gaisina; R. Imayev; H.-J. Fecht; F. Pyczak;

  • 作者单位

    Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa, Russia,Bashkir State University, Ufa, Russia;

    Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa, Russia;

    Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa, Russia;

    Institute for Metals Superplasticity Problems, Russian Academy of Sciences, Ufa, Russia,Bashkir State University, Ufa, Russia;

    Institute of Micro and Nanomaterials, Ulm University, Ulm, Germany;

    Institute of Materials Research, Helmholtz-Zentrum Ceesthacht, Geesthacht, Germany;

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  • 正文语种 eng
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  • 关键词

    Titanium matrix composites; Microstructure; TiB whiskers; Tensile properties;

    机译：钛基复合材料;微观结构TiB晶须;拉伸性能;

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