Study on the surface defect of aluminum alloy hole burnishing

被引：3

作者：

Liu, Jiahui ^{[1
,2
]}

Lin, Xiaoxuan ^{[3
]}

Feng, Feng ^{[3
]}

Wang, Zibiao ^{[4
]}

Zhao, Zirui ^{[3
]}

Bai, Zhaoruo ^{[3
]}

Zhang, Jianfu ^{[1
,2
]}

Feng, Pingfa ^{[1
,2
,3
]}

Zhang, Xiangyu ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Mech Engn, Beijing Key Lab Precis Ultraprecis Mfg Equipments, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Mech Engn, State Key Lab Tribol Adv Equipment, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Shenzhen Int Grad Sch, Div Adv Mfg, Shenzhen 518055, Peoples R China

[4] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 184卷

基金：

中国国家自然科学基金;

关键词：

Hole burnishing; Surface defect; Friction force; Aluminum alloy; Fatigue life; RESIDUAL-STRESS; PARAMETERS; BEHAVIORS; ROUGHNESS; INTEGRITY; WEAR;

D O I：

10.1016/j.triboint.2023.108490

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The surface finish of holes plays a crucial role in their fatigue life, which is significantly compromised by the surface defect (SD) that appears during the burnishing process. In this paper, a kinematic model for hole burnishing was developed to study the formation mechanism of the SD, proposing the existence of the critical burnishing depth (BD) value. Hole burnishing experiments were conducted on aluminum alloy 7050, and the critical BD value was found to be approximately 0.14 mm, validating its existence. When the BD was less than the critical value, the burnished surface was smooth, and the fatigue life increased. When the BD exceeded the critical value, the SD appeared, and the fatigue life decreased.

引用

页数：12

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