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首页> 外文期刊>Journal of engineering materials and technology >Effect of Shot Peening Process on the Fatigue Life of Shot Peened Low Alloy Steel
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Effect of Shot Peening Process on the Fatigue Life of Shot Peened Low Alloy Steel

机译：喷丸工艺对喷丸低合金钢疲劳寿命的影响

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摘要

Shot peening is well known as a surface deformation process which can induce compressive residual stresses into the subsurface of materials in order to improve the fatigue life. In this paper, the effects of the process conditions for both single and double shot peening on the fatigue life of AISI 4340 low alloy steel is investigated. The fatigue tests revealed that the shot peening process could significantly enhance the fatigue life of the treated components. However, a side effect of the process was an increase in surface roughness which was more prevalent under higher peening pressures and led to a reduction in the fatigue life. Therefore, to maximize the performance of the process, the peening parameters need to be carefully selected. Microstructure analysis of the shot peened parts indicated that the nucleation cracks or initiation cracks occurred in the subsurface at depths of 10-20 μm in the case of as-received samples but moved up to the free surface for the shot peened parts.
机译：喷丸处理是众所周知的表面变形过程，可以将残余压缩应力引入材料的次表面，以改善疲劳寿命。本文研究了单喷丸和双喷丸的工艺条件对AISI 4340低合金钢疲劳寿命的影响。疲劳测试表明，喷丸处理可以显着延长被处理部件的疲劳寿命。然而，该方法的副作用是表面粗糙度的增加，这在较高的喷丸压力下更普遍，并且导致疲劳寿命的降低。因此，为了使过程的性能最大化，需要仔细选择喷丸参数。喷丸处理零件的微观结构分析表明，在接收到样品的情况下，在10-20μm的深度处，在表面下出现了形核裂纹或初始裂纹，但在喷丸处理零件的表面向上移动。

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  • 来源
    《Journal of engineering materials and technology》 |2018年第1期|011013.1-011013.7|共7页
  • 作者

    Pham Quang Trung; Nay Win Khun; David Lee Butler;

  • 作者单位

    Sustainable Developments in Civil Engineering Research Group, Faculty of Civil Engineering, Ton Due Thang University, Room E001,19 Nguyen Huu Tho Street, Tan Phong Ward, District 7, Ho Chi Minh City 756636, Vietnam;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, N3.1-B2-01, 50 Nanyang Avenue, 639798, Singapore;

    School of Mechanical and Aerospace Engineering, Nanyang Technological University, N3.2-01-19, 50 Nanyang Avenue, 639798, Singapore;

  • 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
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