Problems in Welding of High Strength Aluminium Alloys
نویسنده
چکیده
The 7XXX series alloys are heat-treatable Al-Zn-Mg or Al-Zn-Mg-Cu alloys. They develop their strength by solution heat treatment followed by ageing. In contrast to the 5XXX series alloys, the 7XXX series alloys do not respond favourably to cold work, because they are strengthened almost exclusively by GP zone formation and precipitates which nucleate from the GP zones. Introducing many new dislocations by cold work after solution treatment and quenching does not greatly accelerate formation of precipitates.
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