...
首页> 外文期刊>Materials Science and Engineering >Synthesis and mechanical behavior of nanostructured Al 5083-TiB_2 metal matrix composites
【24h】

Synthesis and mechanical behavior of nanostructured Al 5083-TiB_2 metal matrix composites

机译:纳米Al 5083 / n-TiB_2金属基复合材料的合成及其力学行为。

获取原文
获取原文并翻译 | 示例
           

摘要

Nanostructured Al 5083-based composites with nano-TiB_2 reinforcement particles were fabricated via cryomilling and spark plasma sintering (SPS). TEM observation revealed that the Al matrix consists of equiaxed nano-grains (average size, ~74 nm), and the reinforcement, TiB_2 nanoparticles (n-TiB_2), was distributed discretely and homogeneously in the Al matrix. The interface between the Al-matrix and n-TiB_2 appears to be free of defects, and no obvious discontinuities were observed. The composite exhibits a compressive strength of 817 MPa with 6.0% strain-to-failure. The strength is 20% higher than that of an equivalent SPS consolidated Al 5083 without reinforcement Nanoindentation was used in our study to provide fundamental insight into the local microscopic mechanical properties. The strengthening mechanisms of the composites are analyzed taking into account the grain boundaries, the Orowan strengthening from the n-TiB_2 particles and dispersoids such as Al_2O_3, A1N and Al_6Mn, as well as geometrically necessary dislocations induced in the matrix by the nano-TiB_2 particles.
机译:通过低温铣削和火花等离子体烧结(SPS)制备了具有纳米TiB_2增强颗粒的纳米结构Al 5083基复合材料。 TEM观察表明,Al基体由等轴纳米晶粒(平均粒径约74nm)组成,TiB_2纳米颗粒(n-TiB_2)的增强体分散均匀地分布在Al基体中。 Al基体和n-TiB_2之间的界面似乎没有缺陷,并且没有观察到明显的不连续性。该复合材料的抗压强度为817 MPa,破坏应变为6.0%。该强度比没有增强的等效SPS固结Al 5083的强度高20%。在我们的研究中使用了纳米压痕技术,以提供对局部微观机械性能的基本了解。考虑了晶界,n-TiB_2颗粒和Al_2O_3,AlN和Al_6Mn等弥散体的Orowan增强以及纳米TiB_2颗粒在基体中引起的几何位错,分析了复合材料的增强机理。 。

著录项

  • 来源
    《Materials Science and Engineering》 |2016年第22期|241-248|共8页
  • 作者单位

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, PR China,Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA;

    Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA,Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, CA 92697, USA;

    Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA,Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, CA 92697, USA;

    Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA,School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA;

    Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA,Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, CA 92697, USA;

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, PR China;

    Department of Chemical Engineering and Materials Science, University of California - Davis, Davis, CA 95616, USA,Department of Chemical Engineering and Materials Science, University of California - Irvine, Irvine, CA 92697, USA;

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

    Nanostructure; Al metal matrix composite; Spark plasma sintering; Mechanical properties;

    机译:纳米结构铝金属基复合材料;火花等离子体烧结;机械性能;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号