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首页> 外文期刊>Materials Science and Engineering >The recrystallization behavior of surface deformation layer of (TiB+TiC)/Ti-6Al-4V composite during isothermal annealing
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The recrystallization behavior of surface deformation layer of (TiB+TiC)/Ti-6Al-4V composite during isothermal annealing

机译：（TiB + TiC）/ Ti-6Al-4V复合材料等温退火过程中的表面再结晶行为

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摘要

The recrystallization behavior of surface deformation layer of (TiB + TiC)/Ti-6Al-4V and Ti-6A1-4V were both investigated during isothermal annealing using X-ray diffraction line profile analysis. The surface deformation layer was introduced by shot peening treatment. The results revealed that with increasing the time of isothermal annealing, the microstructure variations at shot peened layer were obvious. Based on the results of line profile analysis, the recrystallization activation energies were calculated by computer regression analysis, and it showed that the recrystallization activation energy of (TiB+TiC)/Ti-6Al-4V was larger than that of Ti-6A1-4V, which was ascribed to the effect of reinforcements hindering the movements of dislocations, grain and subgrain boundaries in the process of recrystallization. The hindrance effect of reinforcements as sink sources of dislocations gliding resulted that the decrease rate of dislocation density of the composite was slower than that of the matrix. In addition, the relaxation activation energies were obtained according to the analysis of microstrain relaxation, and after isothermal annealing, the depth distribution of domain sizes from the top surface was investigated and discussed in detail. According to above analysis, the results showed that the thermostability of the composite was higher than that of the matrix because of the effect of reinforcements.
机译：利用X射线衍射线轮廓分析方法研究了等温退火过程中（TiB + TiC）/ Ti-6Al-4V和Ti-6A1-4V的表面变形层的再结晶行为。通过喷丸处理引入表面变形层。结果表明，随着等温退火时间的增加，喷丸硬化层的组织变化明显。根据线轮廓分析的结果，通过计算机回归分析计算出重结晶活化能，结果表明（TiB + TiC）/ Ti-6Al-4V的重结晶活化能大于Ti-6A1-4V的重结晶活化能。 ，这归因于增强物阻碍了再结晶过程中位错，晶粒和亚晶界的运动。增强材料作为位错滑移的汇源的阻碍作用导致复合材料的位错密度降低速率比基体材料慢。此外，通过对微应变弛豫的分析，获得了弛豫活化能，并在等温退火后，研究和讨论了从顶表面开始的畴尺寸的深度分布。根据以上分析，结果表明，由于增强作用，复合材料的热稳定性高于基体。

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  • 来源
    《Materials Science and Engineering》 |2011年第2011期|p.239-243|共5页
  • 作者

    Lechun Xie; Chuanhai Jiang; Weijie Lu; Ke Zhan; Qiang Feng; Xueyan Wu; Fangqiu Wang;

  • 作者单位

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

    State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    recrystallization; isothermal annealing; reinforcement; activation energy; dislocation density;

    机译：重结晶;等温退火;增强;活化能;位错密度;

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