Fatigue performance and failure mechanism of ultrasonic-assisted abrasive-belt-ground Inconel 718

被引：20
作者：
Li, Shaochuan [1 ]
Xiao, Guijian [1 ,2 ]
Zhuo, Xiaoqin [1 ]
Chen, Benqiang [1 ]
Zhao, Zeyong [1 ]
Huang, Yun [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mech & Vehicle Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, State Key Lab Mech Transmiss, Chongqing 400044, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 168卷
基金：
中国国家自然科学基金;
关键词：
Ultrasonic-assisted grinding; Inconel; 718; alloy; Surface integrity; Fatigue life; Fatigue behavior; TEXTURED SURFACE GENERATION; VIBRATION; TOPOGRAPHY; INTEGRITY;
D O I：
10.1016/j.ijfatigue.2022.107406
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fatigue performance and failure mechanism of ultrasonic-assisted abrasive belt grinding Inconel 718 surface was studied. The results showed that ultrasonic-assisted abrasive belt grinding improved the surface fatigue performance by 14.3-74.8%. A uniform grain plastic deformation layer formed on the grinding surface, which resulted in a mechanical property gradient. The surface material exhibited superior deformation adaptability, and the subsurface material had interface effects. Strain averaging caused by the intermittent surface texture and interfacial effect caused by grains plastic deformation result in fatigue cracks on the subsurface. Consequently, plastic fracture characteristics appear near the fatigue source. Accordingly, a novel anti-fatigue grinding strategy was proposed.
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页数：17
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