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首页> 外文期刊>International Journal of Fatigue >Fretting fatigue characteristic of Ti-6Al-4V strengthened by wet peening
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Fretting fatigue characteristic of Ti-6Al-4V strengthened by wet peening

机译：喷丸强化Ti-6Al-4V的微动疲劳特性

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摘要

This study investigated the effects of wet peening treatment on the fretting fatigue behavior and crack propagation in Ti-6Al-4V alloy. Wet peening induced a compressive residual stress at 0-160 μm depth and enhanced the hardness at 0-80 μm depth. Results of the fretting fatigue tests show that the fretting damage could efficiently reduce the fatigue life of both the un-peened and wet peened samples. Moreover, wet peening could effectively increase the fretting fatigue resistance. Investigation on crack propagation mechanism revealed that the increased resistance is due to the synergistic effect of the enhanced hardness and the induced compressive residual stress in the wet peening modified layer. The enhanced hardness could resist the local fatigue in the fretting cracking stage and the compressive residual stress could retard crack growth.
机译：本研究研究了湿喷丸处理对Ti-6Al-4V合金微动疲劳行为和裂纹扩展的影响。湿喷丸在0-160μm深度处产生压缩残余应力，并在0-80μm深度处增加硬度。微动疲劳试验的结果表明，微动损伤可有效降低未喷丸和湿喷丸样品的疲劳寿命。此外，湿喷丸可有效提高抗微动疲劳性。裂纹扩展机理的研究表明，电阻的增加是由于湿喷丸改性层中硬度的增加和残余压缩应力的协同作用所致。增强的硬度可以抵抗微动裂纹阶段的局部疲劳，而压缩残余应力可以阻止裂纹扩展。

著录项

  • 来源
    《International Journal of Fatigue》 |2016年第4期|65-69|共5页
  • 作者

    Kang Li; Xue-song Fu; Rui-dong Li; Peng-tao Gai; Zhi-qiang Li; Wen-long Zhou; Guo-qing Chen;

  • 作者单位

    School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;

    School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;

    School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;

    Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, PR China;

    Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, PR China;

    School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;

    School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ti-6Al-4V alloy; Wet peening; Local fatigue; Fretting fatigue;

    机译：Ti-6Al-4V合金;湿喷丸局部疲劳;微动疲劳;

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