Solvus line of the metastable rhombohedral phase in the Al-Zn system for Al-rich alloys

摘要: The X-ray diffraction on single crystals and coarse-grained foils of Al-Zn alloys was used to determine the solvus temperatures metastable rhombohedral α′R-phase. dissolution α′R-phase studied simultaneously by application DTA technique. Results obtained from different heat-treatments investigated were critically interpreted in terms nucleation theory. large α′R-particles necessary obtain correct α′R-solvus line unaffected reversion solid solution below temperatures.