Open AccessFatigue crack growth prediction in 2xxx AA with friction stir weld HAZ properties
Author(s) -
A.D. Tzamtzis,
Alexis T. Kermanidis
Publication year - 2015
Publication title -
frattura ed integrità strutturale
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.368
H-Index - 19
ISSN - 1971-8993
DOI - 10.3221/igf-esis.35.45
Subject(s) - welding , materials science , friction stir welding , metallurgy , paris' law , composite material , structural engineering , engineering , crack closure , fracture mechanics
An analytical model is developed to predict fatigue crack propagation rate under mode I loading in\ud2024 aluminum alloy with FSW HAZ material characteristics. Simulation of the HAZ local properties in parent\ud2024 AA was performed with overaging using specific heat treatment conditions. The model considers local\udcyclic hardening behavior in the HAZ to analyze crack growth. For the evaluation of the model, the analytical\udresults have been compared with experimental fatigue crack growth on overaged 2024 alloy simulating material\udbehavior at different positions within the HAZ. The analytical results showed that cyclic hardening at the crack\udtip can be used successfully with the model to predict FCG in a material at overaged condition associated with a\udlocation in the FSW HAZ