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首页> 外文期刊>Journal of Materials Science >Aging behavior and precipitation kinetics of SiCp/6061AI composites
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Aging behavior and precipitation kinetics of SiCp/6061AI composites

机译：SiCp / 6061AI复合材料的时效行为和析出动力学

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摘要

The aging behavior of SiC particle reinforced 6061 aluminum matrix composites was investigated with Brinell hardness measurement, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). For 40 vol%SiCp/6061Al composite, the age-hardening efficiency was lower than that of monolithic 6061Al alloy and its high strength was mainly attributed to the introduction of high volume fraction particles. At low aging temperature, the aging process of composite was more accelerated than that of 6061Al alloy. With temperature increasing, the time to reach the peak hardness was shortened and the precipitation processes became accelerated. Moreover, precipitation process observed in the matrix alloy was altered by the addition of SiC particles. Formation of G.P. region was severely suppressed and the activation energy of β′ phase decreased, which made the precipitation of β′ phase easier than that of 6061Al alloy.
机译：用布氏硬度测量，差示扫描量热法（DSC），扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究了SiC颗粒增强的6061铝基复合材料的时效行为。对于40 vol％SiCp / 6061Al复合材料，时效效率低于整体式6061Al合金，其高强度主要归因于引入了高体积分数的颗粒。在低时效温度下，复合材料的时效过程比6061Al合金要快得多。随着温度的升高，达到峰值硬度的时间缩短，沉淀过程加快。此外，通过添加SiC颗粒改变了在基体合金中观察到的沉淀过程。 G.P.的形成与6061Al合金相比，该区域受到了明显的抑制，β'相的活化能降低，使β'相的析出容易。

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  • 来源
    《Journal of Materials Science》 |2004年第5期|1759-1763|共5页
  • 作者

    Zhao Min; Wu Gaohui; Jiang Longtao;

  • 作者单位

    School of Materials Science and Engineering Harbin Institute of Technology;

    School of Materials Science and Engineering Harbin Institute of Technology;

    School of Materials Science and Engineering Harbin Institute of Technology;

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  • 正文语种 eng
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