Study of fatigue behaviour of 7475 aluminium alloy

被引：66
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
收藏
页码：231 / 236
页数：6
相关论文
共 14 条
[1]  
BURATTI M, 1986, AL TECHN C P, P468
[2]  
CARCIACORDOVILL.C, 1994, MAT SCI ENG A-STRUCT, V174, P173
[3]   FACTORS CONTROLLING CRACK VELOCITY IN 7000 SERIES ALUMINUM-ALLOYS DURING FATIGUE IN AN AGGRESSIVE ENVIRONMENT [J].
HOLROYD, NJH ;
HARDIE, D .
CORROSION SCIENCE, 1983, 23 (06) :527-&
[4]   MICROSTRUCTURAL INFLUENCES ON FATIGUE CRACK GROWTH IN TI-6AL-4V [J].
IRVING, PE ;
BEEVERS, CJ .
MATERIALS SCIENCE AND ENGINEERING, 1974, 14 (03) :229-238
[5]   A FATIGUE-CRACK-GROWTH-BASED ANALYSIS OF 2-STEP CORROSION-FATIGUE TESTS [J].
ISHIHARA, S ;
MCEVILY, AJ ;
SHIOZAWA, K .
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1995, 18 (11) :1311-1321
[6]   TENSILE AND FATIGUE PROPERTIES OF A THERMOMECHANICALLY TREATED 7475 ALUMINUM-ALLOY [J].
JAHN, MT ;
LUO, J .
JOURNAL OF MATERIALS SCIENCE, 1988, 23 (11) :4115-4120
[7]  
OSGOOD CC, 1982, FATIGUE DESIGN, P439
[8]   FATIGUE BEHAVIOR AND FAILURE MECHANISMS OF MODIFIED 7075 ALUMINUM-ALLOYS [J].
SANTNER, JS ;
EYLON, D .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1979, 10 (07) :841-848
[9]  
Suresh S., 1996, FATIGUE MAT, p[119, 209]
[10]  
Tokaji K., 1992, SHORT FATIGUE CRACKS, P85
12