Study of fatigue behaviour of 7475 aluminium alloy

被引：64

作者：

Verma, BB ^{[1
]}

Atkinson, JD

Kumar, M

机构：

[1] Reg Engn Coll, Dept Met Engn, Rourkela 769008, India

[2] Sheffield Hallam Univ, Sch Engn, Sheffield S1 1WB, S Yorkshire, England

来源：

BULLETIN OF MATERIALS SCIENCE | 2001年 / 24卷 / 02期

关键词：

7475 aluminium alloy; fatigue life; fatigue crack growth; cyclic cleavage; ductile striations;

D O I：

10.1007/BF02710107

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：231 / 236

页数：6