Paper Title:
Designing Light Alloys for Fatigue Crack Growth Resistance
  Abstract

Fatigue crack growthresistance is critical to the design and performance of structural components.This study focuses on understanding the microstructural mechanisms of fatigue crack propagation in commonly used structural materials, cast and wrought aluminum and titanium alloys, with various microstructures resulting from changes in chemistry or heat treatment (A535-F, 6061-T6, and mill- and b-annealed Ti-6Al-4V).Stress ratio effects were evaluated by conducting fatigue crack growth tests on compact tension specimens at low, intermediate, and high stress ratios, R=0.1, 0.5, and 0.7, respectively. Initial flaw size effects were also studied by performing small crack growth tests at R=0.1. Data reduction strategies compensating for closure and Kmax effects on crack growth and design curves will be presented.

  Info
Periodical
Chapter
Chapter 6: Corrosion and Surface Modification
Edited by
Hajo Dieringa, Norbert Hort and Karl Ulrich Kainer
Pages
393-396
DOI
10.4028/www.scientific.net/MSF.690.393
Citation
A. G. Gavras, D. A. Lados, "Designing Light Alloys for Fatigue Crack Growth Resistance", Materials Science Forum, Vol. 690, pp. 393-396, 2011
Online since
June 2011
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: Yong Nam Kwon, Young Seon Lee, J.H. Lee
Abstract:Thermomechanical behavior of Al-Mg-Si alloys has been studied to investigate the effect of microstructural features such as pre-existing...
581
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: Ha Guk Jeong, Y.G. Jeong, Duk Jae Yoon, Seo Gou Choi, Woo Jin Kim
Abstract:Magnesium alloy AZ31, which processed by conventional rolling or extrusion, has high anisotropy of mechanical properties in its strength and...
235
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: Joon Sik Park, Jeong Min Kim, Young Ho Song, Byung Hwan-Hong, Ye Won Cho, Sang Wook Joo, Joong Seok-Oh
Chapter 6: New Materials and Composites Materials
Abstract:The nature of high specific strength compared with other structural materials has led to wide application of Mg alloys. However, Mg alloys...
727