Study of fatigue behaviour of 7475 aluminium alloy

Bulletin of materials science

M Kumar¹  J D Atkinson²  B B Verma¹ 

[1] Department of Metallurgical Engineering, Regional Engineering College, Rourkela 769 008, India$$Department of Metallurgical Engineering, Regional Engineering College, Rourkela 769 008, IndiaDepartment of Metallurgical Engineering, Regional Engineering College, Rourkela 769 008, India$$;School of Engineering, Sheffield Hallam University, Sheffield S1 1WB, UK$$School of Engineering, Sheffield Hallam University, Sheffield S1 1WB, UKSchool of Engineering, Sheffield Hallam University, Sheffield S1 1WB, UK$$

关键词: 7475 Aluminium alloy;    fatigue life;    fatigue crack growth;    cyclic cleavage;    ductile striations.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Fatigue properties of a thermomechanically treated 7475 aluminium alloy have been studied in the present investigation. The alloy exhibited superior fatigue life compared to conventional structural aluminium alloys and comparable stage II crack growth rate. It was also noticed that the fatigue crack initiated from a surface grain and the crack extension was dominated by ductile striations. Analysis also revealed that this alloy possessed fracture toughness and tensile properties superior to that noticed with other structural aluminium alloys. Therefore the use of this alloy can safely reduce the overall weight of the aircraft.

【 授权许可】

Unknown