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首页> 外文期刊>Materials Science and Engineering >Enhanced elevated-temperature mechanical properties of Al-Mn-Mg containing TiC nano-particles by pre-strain and concurrent precipitation
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Enhanced elevated-temperature mechanical properties of Al-Mn-Mg containing TiC nano-particles by pre-strain and concurrent precipitation

机译：通过预应变和同时析出提高含Al-Mn-Mg的TiC纳米颗粒的高温机械性能

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摘要

The influence of pre-strain on the tension and creep behavior of Al-Mn-Mg containing nano-sized TiC particles at elevated temperatures was investigated. Introduction of TiC nano-particles and the application of pre-strain significantly increase the strength at the ambient temperature and at 473 K, even though the strengthening effect diminishes at 573 K due to the more activated dislocation climb. Small pre-strain (von Mises strain of 0.2) could increase the yield strength at 573 K from 72 MPa to 96 MPa. Larger pre-strain promotes the precipitation during hot deformation at 573 K, and concurrent precipitation suppresses work softening by the pinning effect, leading to a significantly enhanced ductility and creep rupture life.
机译：研究了在高温下预应变对含Al-Mn-Mg纳米TiC颗粒的拉伸和蠕变行为的影响。 TiC纳米粒子的引入和预应变的应用显着提高了环境温度和473 K时的强度，尽管由于激活位错的上升，强化作用在573 K处减弱了。较小的预应变（von Mises应变为0.2）可以将573 K时的屈服强度从72 MPa增加到96 MPa。较大的预应变会在573 K的热变形过程中促进析出，同时析出会通过钉扎效应抑制工作软化，从而显着提高延展性和蠕变断裂寿命。

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  • 来源
    《Materials Science and Engineering》 |2018年第7期|305-310|共6页
  • 作者

    Qinglong Zhao; Huidi Zhang; Xiaoxian Zhang; Feng Qiu; Qichuan Jiang;

  • 作者单位

    Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University;

    Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University;

    Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University;

    Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University;

    Key Laboratory of Automobile Materials, Ministry of Education, and School of Materials Science and Engineering, Jilin University;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aluminum-matrix composite; Dynamic recrystallization; High temperature tensile properties; Strain-induced precipitation;

    机译：铝基复合材料;动态再结晶;高温拉伸性能;应变诱发析出;

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