RECRYSTALLIZATION OF SOLID SOLUTIONAL RANGE Al

Cold rolled Al-rich solid solutions containing Li, Mg or Zn have been studied on the work-hardening, recrystallization and anneal-hardening by means of X-ray Laue method and hardness measurement.The measurements have been carried out on the specimens annealed at 100-500°C for these Al alloy plates which have been rolled about 92-95%.The results obtained are as follows:1) The rolling Al-Li alloy of comparatively high content of Li is somewhat difficult, but those of low content, of Li, and of Al-Mg and Al-Zn alloys are easy.2) Beginning temperatures of recrystallization of Al-Li and Al-Zn are about 250°C and 200°C respectively.3) The Al-Mg alloys containing 1.17% and 1.29%Mg begin to recrystallize at about 250°C and at 200°C respectively. It seems that there is a maximum recrystallization temperature in Al-Mg containing 1-2%Mg.4) Anneal-hardening has been found in Al-Mg and Al-Zn when annealed at 100°C.