Tribological properties and tool wear in milling of in-situ TiB2/7075 Al composite under various cryogenic MQL conditions

被引：35
作者：
Chen, Jie [1 ]
Yu, Weiwei [1 ]
Zuo, Zhenyu [2 ]
Li, Yugang [2 ]
Chen, Dong [2 ,3 ]
An, Qinglong [1 ]
Wang, Haowei [2 ]
Chen, Ming [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mech Engn, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Anhui Aluminium Matrix Composites Engn Res Ctr, Huaibei 235047, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2021年 / 160卷
基金：
国家重点研发计划;
关键词：
Cryogenic; Minimum quantity lubrication; Composite; Tool wear; MINIMUM QUANTITY LUBRICATION; SURFACE INTEGRITY; MATRIX COMPOSITES; TI-6AL-4V; ALLOY;
D O I：
10.1016/j.triboint.2021.107021
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
n the precision machining of in-situ TiB2/7075 composite, the feasibility of cryogenic minimum quantity lubrication (CMQL) was explored considering the requirements of environmental protection and prolonging tool life. In the supercritical CO2 (scCO2) jet, water-based cutting fluid further improved the cooling performance, while the soluble vegetable oil greatly improved the lubrication performance. The friction experiment verified that the coefficient of friction (COF) under scCO2-oil on water based MQL (scCO2-OoWMQL) condition was as low as 0.1. The milling experiment verified that the scCO2-OoWMQL condition was prominent in inhibiting adhesive wear and slowing down abrasive wear, due to the combination of excellent cooling and lubrication performance, so the tool life was extended by 198.08% compared with dry conditions.
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页数：17
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