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Volume 24 Issue 12
Dec.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(12): 1431-1437
Li Zhang, Bao-lin Wu,  and Yu-lin Liu, Microstructure and mechanical properties of a hot-extruded Al-based composite reinforced with core-shell-structured Ti/Al3Ti, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1431-1437. https://doi.org/10.1007/s12613-017-1536-9
Cite this article as:
Li Zhang, Bao-lin Wu,  and Yu-lin Liu, Microstructure and mechanical properties of a hot-extruded Al-based composite reinforced with core-shell-structured Ti/Al3Ti, Int. J. Miner. Metall. Mater., 24(2017), No. 12, pp. 1431-1437. https://doi.org/10.1007/s12613-017-1536-9
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研究论文Open Access

Microstructure and mechanical properties of a hot-extruded Al-based composite reinforced with core-shell-structured Ti/Al3Ti

  • School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

  • Liaoning Key Laboratory of Aviation Light Alloy and Processing Technology, Shenyang Aerospace University, Shenyang 110136, China

  • 通讯作者:

    Li Zhang    E-mail: zhangli@sau.edu.cn

  • An Al-based composite reinforced with core-shell-structured Ti/Al3Ti was fabricated through a powder metallurgy route followed by hot extrusion and was found to exhibit promising mechanical properties. The ultimate tensile strength and elongation of the composite sintered at 620℃ for 5h and extruded at a mass ratio of 12.75:1 reached 304 MPa and 14%, respectively, and its compressive deformation reached 60%. The promising mechanical properties are due to the core-shell-structured reinforcement, which is mainly composed of Al3Ti and Ti and is bonded strongly with the Al matrix, and to the reduced crack sensitivity of Al3Ti. The refined grains after hot extrusion also contribute to the mechanical properties of this composite. The mechanical properties might be further improved through regulating the relative thickness of Al-Ti intermetallics and Ti metal layers by adjusting the sintering time and the subsequent extrusion process.
    • Research ArticleOpen Access

    Microstructure and mechanical properties of a hot-extruded Al-based composite reinforced with core-shell-structured Ti/Al3Ti

    + Author Affiliations
      Abstract
    • An Al-based composite reinforced with core-shell-structured Ti/Al3Ti was fabricated through a powder metallurgy route followed by hot extrusion and was found to exhibit promising mechanical properties. The ultimate tensile strength and elongation of the composite sintered at 620℃ for 5h and extruded at a mass ratio of 12.75:1 reached 304 MPa and 14%, respectively, and its compressive deformation reached 60%. The promising mechanical properties are due to the core-shell-structured reinforcement, which is mainly composed of Al3Ti and Ti and is bonded strongly with the Al matrix, and to the reduced crack sensitivity of Al3Ti. The refined grains after hot extrusion also contribute to the mechanical properties of this composite. The mechanical properties might be further improved through regulating the relative thickness of Al-Ti intermetallics and Ti metal layers by adjusting the sintering time and the subsequent extrusion process.
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