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首页> 外文期刊>Journal of Materials Research >Evolution of constitution, structure, and mechanical properties in Fe-Ti-Zr-B heterogeneous multiphase composites
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Evolution of constitution, structure, and mechanical properties in Fe-Ti-Zr-B heterogeneous multiphase composites

机译：Fe-Ti-Zr-B异质多相复合材料的组成，结构和力学性能的演变

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摘要

The constituent phases, the microstructure, and the mechanical properties of a series of Fe_(87-x)Ti_7Zr_6B_x: (x = 0, 2, 4, 6, 8, 10, and 12) alloys produced by copper mold casting were investigated. Partial substitution of iron by boron in the Fe_(87)Ti_7Zr_6 ultrafine eutectic alloy induces phase/microstructural evolution and simultaneously changes the mechanical properties. In the composition range of 2 ≤ x≤ 6, the typical lamellar structure slightly changes into a spherical cellular-type eutectic. For 8 ≤ x ≤ 12, multiphase composites containing a glassy phase form. The ultrafine eutectic composites exhibit a high compressive strength of ～2.9-3.1 GPa and a distinct plasticity of ～2-8%, whereas the glassy matrix composites show a high strength of ～3.1-3.3 GPa but no observable macroscopic plasticity before failure. These findings reveal that the plasticity of heterogeneous multiphase composites is strongly related to the length scale variables and the crystallinity of the constituent phases.
机译：研究了通过铜模铸造生产的一系列Fe_（87-x）Ti_7Zr_6B_x：（x = 0、2、4、6、8、10和12）合金的组成相，微观结构和力学性能。 Fe_（87）Ti_7Zr_6超细共晶合金中的硼部分替代了铁，诱导了相/组织的演变，同时改变了机械性能。在2≤x≤6的组成范围内，典型的层状结构略微改变为球形蜂窝状共晶。对于8≤x≤12，包含玻璃相形式的多相复合材料。超细共晶复合材料显示出约2.9-3.1 GPa的高抗压强度，并具有约2-8％的可塑性，而玻璃状基体复合材料显示出约3.1-3.3 GPa的高强度，但在破坏前没有观察到的宏观可塑性。这些发现表明，异相多相复合材料的可塑性与长度尺度变量和组成相的结晶度密切相关。

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  • 来源
    《Journal of Materials Research》 |2011年第3期|p.365-371|共7页
  • 作者

    Jin Man Park; Do Hyang Kim; Ki Buem Kim; Norbert Mattern; Jürgen Eckert;

  • 作者单位

    Leibniz Institute for Solid State and Materials Research Dresden, Institute for Complex Materials, D-01171 Dresden, Germany Center for Non-Crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul 120-749, Republic of Korea;

    Center for Non-Crystalline Materials, Department of Metallurgical Engineering, Yonsei University, Seoul 120-749,Republic of Korea;

    Department of Advanced Materials Engineering, Sejong University, Seoul 143-747, Republic of Korea;

    Leibniz Institute for Solid State and Materials Research Dresden, Institute for Complex Materials, D-01171 Dresden, Germany;

    Leibniz Institute for Solid State and Materials Research Dresden, Institute for Complex Materials, D-01171Dresden, Germany TU Dresden, Institute of Materials Science, D-01062 Dresden, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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