Paper Title:
Super-Long Life Fatigue Behavior of Structural Aluminum Alloys
  Abstract

The objective of this study is to determine very long life fatigue and near threshold fatigue crack growth behaviors of 7075/T6 and 6061/T6 Al-alloys using piezoelectric accelerated fatigue at 19.5KHz. The experimental results show the fatigue failure can occur beyond 107, even 109 cycles, and endurance limits could not be obtained in the Al-alloys until 109 cycles. Fatigue voids are noticed on fatigue fracture in both alloys. By using scanning electron microscopy (SEM), the crack initiation and propagation behaviors have been examined. Fatigue crack growth rates of small cracks in the Al-alloys are found to be greater than those of large cracks at the same stress intensity factor range.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1287-1294
DOI
10.4028/www.scientific.net/KEM.261-263.1287
Citation
Q. Y. Wang, N. Kawagoishi, N. Yan, Q. Chen, "Super-Long Life Fatigue Behavior of Structural Aluminum Alloys", Key Engineering Materials, Vols. 261-263, pp. 1287-1294, 2004
Online since
April 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jeong Min Kim, Bong Koo Park, Joong Hwan Jun, Ki Tae Kim, Woon Jae Jung
Abstract:Small amounts of minor alloying elements such as RE and Sr were added to Mg- 8wt%Al-5wt%Zn (AZ91D+4%Zn), and their effects on the...
374
Authors: Lidia Lityńska-Dobrzyńska, Patrick Ochin, Anna Góral, Marek Faryna, Jan Dutkiewicz
Abstract:The effect of rapid solidification on the microstructure of Al-Zn-Mg-Cu alloys with 8 wt.% Zn-2 wt.% Mg-2.3 wt.% Cu and 0.2 or 0.5 wt.% of Zr...
42
Authors: Timothy Wong, Z. Yu, K. Suzuki, M.A. Gibson, K. Ishikawa, K. Aoki
Abstract:Nb/NiZr composite alloy membranes have been reported to have hydrogen permeabilities higher than that of pure Pd. Since the hydrogen...
2839
Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang
Abstract:The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The...
197
Authors: Hao Liang, Fu Sheng Pan, Yong Mei Chen, Ji Jun Yang, Jing Feng Wang, Bo Liu
Metal alloy Materials
Abstract:The tensile properties at strain rates of 0.001/s, 0.1/s and 0.6/s for Mg-3Al1-Zn-2Y, Mg-3Al-2Zn-2Y and Mg-3Al-6Zn-2Y were researched, which...
1671