The effect of friction stir processing on the microstructure and mechanical properties of an aluminum lithium alloy
Giles, Tanya L.
Zhilyaev, Alexander P.
Mahoney, Murray W.
McNelley, Terry R.
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Friction stir processing (FSP) was conducted on a wrought plate of AA2099 to reﬁne and homogenize the microstructure and enhance the through-thickness ductility and fracture resistance. Optical microscopy (OM), orientation imaging microscopy (OIM), and transmission electron microscopy (TEM) methods were employed to evaluate microstructure and micro- texture in as-received material and in material subjected to FSP as well as postprocessing heat treatments. Hardness and orientation-dependent tensile test data were combined with anticlastic bending fatigue data to characterize the as-received, processed, and processed and heat-treated conditions of the material.
The article of record as published may be found at http://dx.doi.org/10.1007/s11661-008-9698-8
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