Hole-making processes and their impacts on the microstructure and fatigue response of aircraft alloys

被引：48

作者：

Sun, Dan ^{[1
]}

Lemoine, Patrick ^{[2
]}

Keys, Daniel ^{[1
]}

Doyle, Patrick ^{[2
]}

Malinov, Savko ^{[1
]}

Zhao, Qing ^{[3
]}

Qin, Xuda ^{[3
]}

Jin, Yan ^{[1
]}

机构：

[1] Queens Univ Belfast, Sch Mech & Aerosp Engn, Belfast BT7 5AH, Antrim, North Ireland

[2] Univ Ulster, Nanotechnol & Integrated BioEngn Ctr, Newtownabbey BT37 0QB, North Ireland

[3] Tianjin Univ, Tianjin Key Lab Equipment Design & Mfg, Tianjin 300072, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2018年 / 94卷 / 5-8期

基金：

英国工程与自然科学研究理事会;

关键词：

Aircraft alloys; Drilling; Helicalmilling; Fatigue; SURFACE INTEGRITY; TITANIUM-ALLOY; TOOL LIFE; TI-6AL-4V;

D O I：

10.1007/s00170-016-9850-3

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A comparative study on conventional drilling and helical milling has been reported under the context of aircraft alloy hole making. The impacts of these two different machining processes on the microstructures and the fatigue performance of different aircraft alloys have been elaborated. Results show that both alloys undergo more severe surface/subsurface plastic deformation under conventional drilling comparing to helical milling process. Helical milling leads to a longer coupon fatigue life compared to conventional drilling for both alloys. The fatigue life of Al 2024-T3 is significantly longer than that of Ti-6Al-4V under all machining conditions. The use of coolant generally produces less damaged surface and leads to enhanced fatigue performance of the machined alloys. In addition, the machined surface roughness has been studied to further elaborate the effects of different machining processes.

引用

页码：1719 / 1726

页数：8

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