An Investigation of the High Cycle Fatigue and Final Fracture Behavior of Aluminum Alloy 2219 |
| Journal |
Key Engineering Materials (Volumes 378 - 379) |
| Volume |
Advances in Understanding the Fatigue Behavior of Materials |
| Edited by |
Dr. T. S. Srivatsan, FASM, FASME |
| Pages |
207-230 |
| DOI |
10.4028/www.scientific.net/KEM.378-379.207 |
| Online since |
March, 2008 |
| Authors |
T.S. Srivatsan,
Satish Vasudevan,
Lisa Park,
R.J. Lederich
|
| Keywords |
Aluminum Alloy, Cyclic Fatigue, Fatigue Life, Fracture Behaviour, Microstructure, Stress Amplitude |
| Abstract |
In this research paper, the cyclic stress amplitude controlled fatigue response and
fracture behavior of an Al-Cu (Aluminum Association designation 2219) is presented and
discussed. The alloy was provided as a thin sheet in the T62 temper in the fully anodized
condition. A small quantity of the as-provided sheet was taken and the surface carefully prepared to
remove the thin layer of anodized coating. Test specimens of the alloy, prepared from the two
sheets (anodized and non-anodized), were cyclically deformed under stress amplitude control at
two different load ratios with the primary objective of establishing the conjoint influence of
magnitude of cyclic stress, load ratio and intrinsic microstructural effects on cyclic fatigue life and
final fracture characteristics. The high cycle fatigue resistance of the alloy is described in terms of
maximum stress, load ratio, and microstructural influences on strength. The final fracture behavior
of the alloy sheet is discussed in light of the concurrent and mutually interactive influences of
intrinsic microstructural effects, deformation characteristics of the alloy microstructure, magnitude
of cyclic stress, and resultant fatigue life. |
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