Studies of intergranular stress corrosion cracks growing in AA5083 aged to contain ?-phase (Al3Mg2) particles at the grain boundary are reported. A special technique to examine the crack tip region of intergranular stress corrosion cracks by high-resolution transmission electron microscopy (TEM) was employed for this evaluation. These studies have shown that for tests in a NaCl + K2CrO4 solution that ?-phase particles are converted to Al2O3 particles and that the crack propagates through or around them.
Revised: January 17, 2011 |
Published: May 1, 2004
Citation
Jones R.H., V.Y. Guertsman, J.S. Vetrano, and C.F. Windisch. 2004.Crack-Particle Interactions During Intergranular Stress Corrosion of AA5083 as Observed by Cross-section Transmission Electron Microscopy.Scripta Materialia 50, no. 10:1355-1359.PNNL-SA-39036.