Temperature effect on crack propagation properties of aluminum alloys in aircraft

被引：0

作者：

Li K. ^{[1
]}

Xiong J. ^{[1
]}

Ma S. ^{[2
]}

Chen B. ^{[2
]}

机构：

[1] School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing

[2] Beijing Institute of Aeronautical Materials, Beijing

来源：

Xiong, Junjiang (jjxiong@buaa.edu.cn) | 1600年 / Beijing University of Aeronautics and Astronautics (BUAA)卷 / 43期

基金：

中国国家自然科学基金;

关键词：

Aluminum alloy; Crack propagation; Fatigue; Scanning election microscope (SEM); Temperature;

D O I：

10.13700/j.bh.1001-5965.2016.0244

中图分类号：

学科分类号：

摘要：

Fatigue properties on crack propagation rate at low and elevated temperatures are the precondition of damage tolerance design for aviation metallic structures. Therefore, in order to determine fatigue properties on crack propagation rate, fatigue tests were performed on six categories of aluminum alloys (i. e. 2024-T351, 2397-T8, 6061-T651, 7050-T7451, 7050-T7452, 7475-T761) at five kinds of temperatures (-70℃, -54℃, 25℃, 125℃, 150℃) under constant amplitude loading, and fatigue crack propagation properties were determined and the comparisons between fatigue properties on crack propagation rate at different temperatures were carried out. The mechanisms of temperature effect on crack propagation rate were deduced from fractographic studies by using scanning election microscope (SEM). The results show that, compared with the situation at 25℃, logarithmic crack propagation resistance coefficient decreases by 7% to 15% at low temperature, but increases by 5% to 23% at elevated temperature; crack propagation exponent increases by 7% to 21% at low temperature, but decreases by 5% to 34% at elevated temperature, compared with the situation at 25℃; hydrogen embrittlement and oxidation effects are likely to be the main reasons for more rapid crack propagation with the increasing temperature. © 2017, Editorial Board of JBUAA. All right reserved.

引用

页码：761 / 768

页数：7

共 22 条

[1]

James T.B., Vipul K.G., Sean R.A., Et al., Effect of low temperature on fatigue crack formation and microstructure-scale propagation in legacy and modern Al-Zn-Mg-Cu alloys, International Journal of Fatigue, 55, pp. 268-275, (2013)

[2]

Zhang F.Z., Ye X.B., Song J., Et al., Study on crack growth behaviors of three kinds of aeronautical materials at 25℃ and -40℃, Acta Aeronautica et Astronautica Sinica, 28, 3, pp. 593-595, (2007)

[3]

Fassina P., Brunella M., Lazzari L., Et al., Effect of hydrogen and low temperature on fatigue crack propagation of pipeline steels, Engineering Fracture Mechanics, 103, pp. 10-25, (2013)

[4]

Franck A.T.G., Daniel L., Alexandre B., Et al., Effect of extrusion aspect ratio and test temperatures on fatigue crack propagation behavior of a 2099-T83 Al-Li alloy, International Journal of Fatigue, 59, pp. 244-253, (2014)

[5]

Ding J., Hall R., Byrne J., Effects of stress ratio and temperature on fatigue crack propagation in a Ti-6Al-4V alloy, International Journal of Fatigue, 27, 10-12, pp. 1551-1558, (2005)

[6]

Song Q.G., Zhao B., Geng X.L., Et al., Effect of stress ratio and temperature on the fatigue crack growth behavior of aerometal and study of the mechanism, Journal of Materials Science and Engineering, 32, 2, pp. 157-162, (2015)

[7]

Wu H., Zhao Y.Q., Zeng W.D., Et al., Fatigue crack propagation behavior of Ti40 alloy at different temperatures, Rare Metal Materials and Engineering, 37, 8, pp. 1403-1406, (2008)

[8]

Adair B.S., Johnson W.S., Antolovich S.D., Et al., Crystall-ographic orientation and temperature effects on the fatigue crack propagation rate and resulting fracture surface morphology in PWA1484 single crystal superalloy, Engineering Materials & Structures, 38, 1, pp. 56-68, (2015)

[9]

Xiong Y., Chen B.B., Zheng S.L., Et al., Study on fatigue crack growth behavior of 16MnR steel under different conditions, Metallurgica Sinica, 45, 7, pp. 849-855, (2009)

[10]

Shah M., Mabru C., Rezai-Aria F., Characterisation of the surface damage of X38CrMoV5 (AISI H11) tool steel at room temperature and 600℃, Fatigue & Fracture of Engineering Materials & Structures, 38, 6, pp. 742-754, (2015)

← 1 2 3 →