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首页> 外文期刊>Materials Science and Engineering >The influence of higher surface hardness on fretting fatigue life of hard anodized aerospace AL7075-T6 alloy
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The influence of higher surface hardness on fretting fatigue life of hard anodized aerospace AL7075-T6 alloy

机译：较高的表面硬度对航空硬质阳极氧化铝AL7075-T6合金微动疲劳寿命的影响

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摘要

In this research work, the influence of higher surface hardness on the fretting fatigue life of hard anodized aerospace AL7075-T6 alloy was investigated. An optimization of the parameters of hard anodized A17075-T6 alloy to obtain higher surface hardness was presented. Confirmation test was carried out to show the improvement after using the best parameter combination attained from the optimization process. The result shows that hard anodized coating (surface with hardness of 360 HV and thickness of around 17μm) can significantly improve fretting fatigue life of specimens at low stress, while at high stress, the extent of fretting fatigue life decreases. Hard anodized coating with higher thickness (29 mm) and high surface hardness (393 HV) decreased the fretting fatigue life of specimens at stresses beyond 200 MPa, this mainly attributed to the coating brittleness and micro-cracking.
机译：在这项研究工作中，研究了较高的表面硬度对硬质阳极氧化航空航天AL7075-T6合金微动疲劳寿命的影响。提出了优化阳极氧化A17075-T6合金以获得更高表面硬度的参数的优化方法。进行了确认测试，以显示使用从优化过程中获得的最佳参数组合后的改进。结果表明，硬质阳极氧化涂层（硬度为360 HV，厚度约为17μm的表面）可以显着提高样品在低应力下的微动疲劳寿命，而在高应力下，微动疲劳寿命降低。具有更高厚度（29毫米）和高表面硬度（393 HV）的硬质阳极氧化涂层降低了试样在200 MPa以上应力下的微动疲劳寿命，这主要归因于涂层的脆性和微裂纹。

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  • 来源
    《Materials Science and Engineering》 |2013年第10期|377-387|共11页
  • 作者

    Ahmed A.D. Sarhan; E. Zalnezhad; M. Hamdi;

  • 作者单位

    Center of Advanced Manufacturing and Material Processing, Department of Engineering Design and Manufacture, Faculty of Fngineering, University of Malaya,Kuala Lumpur 50603, Malaysia,Department of Mechanical Engineering, Faculty of Engineering, Assiut University, Assiut 7/5/6, Egypt;

    Center of Advanced Manufacturing and Material Processing, Department of Engineering Design and Manufacture, Faculty of Fngineering, University of Malaya,Kuala Lumpur 50603, Malaysia,Faculty of Engineering, Islamic Azad University, Chalous Branch, Iran;

    Center of Advanced Manufacturing and Material Processing, Department of Engineering Design and Manufacture, Faculty of Fngineering, University of Malaya,Kuala Lumpur 50603, Malaysia;

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  • 正文语种 eng
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  • 关键词

    aluminum7075-t6 alloy; hard anodized coating; surface hardness; fretting fatigue;

    机译：铝7075-t6合金;硬质阳极氧化涂层;表面硬度微动疲劳;

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