The influence of milling induced residual stress on fatigue life of aluminum alloys

被引：22

作者：

Berry, Luke ^{[1
]}

Wheatley, Greg ^{[1
]}

Ma, Wenchen ^{[2
]}

Nejad, Reza Masoudi ^{[3
]}

Berto, Filippo ^{[4
]}

机构：

[1] James Cook Univ, Coll Sci & Engn, Townsville, Qld 4811, Australia

[2] Phasor Engn LLC, 603 S Main St,Ste 130, Winter Garden, FL 34787 USA

[3] Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu 611731, Peoples R China

[4] NTNU Norwegian Univ Sci & Technol, Dept Mech & Ind Engn, Trondheim, Norway

来源：

FORCES IN MECHANICS | 2022年 / 7卷

关键词：

Fatigue life; Residual stress; Aluminum alloy; Crack propagation; Failure; CRACK-GROWTH-BEHAVIOR; SURFACE INTEGRITY; CLOSURE; PARAMETERS; AL;

D O I：

10.1016/j.finmec.2022.100096

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of machining strategies on the surface integrity have received minimal consideration as this fluid situation develops, specifically, the machining induced residual stress generated in the material during milling. This study investigates the presence of machining induced residual stress in Aluminum 7075 and its effects on fatigue life. The testing consists of a layer removal process to measure residual stress followed by a three-point bending fatigue test. The study finds that an increase in feed per tooth in combination with a reduction in cutting speed increases compressive residual stress at the surface in the material. The fatigue testing concludes that this increase in compressive stress improves fatigue life with varying effects on long crack and short crack propagation.

引用

页数：12

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