Abstract
Structural changes taking place in the precipitation–hardened Al–Zn alloys studied through various techniques are reviewed. Further, results of the experiments carried out in the present work on some Al–Zn (4 to 35 at%) alloys using several techniques like electrical resistivity, X-ray diffraction and transmission electron microscopy (TEM) have been mentioned. Based on these results, the structural changes taking place in this system are discussed in the light of the two metastable solvus curves.
