High strength aluminum based alloy and the article made thereof

   
   

The invention relates to high strength aluminium--based alloy of Al--Zn--Mg--Cu system and the articles made thereof. The present alloy is characterized by the combination of improved properties: flowability, technological plasticity, fracture toughness while preserving high levels of strength properties. Said alloy comprises (mass. %):

              Zn  6.35-8.0             Si  0.01-0.2
              Mg  0.5-2.5              Fe  0.06-0.25
              Cu  0.8-1.3              Zr  0.07-0.2
              Cr  0.001-0.05           Ti  0.03-0.1
              Mn  0.001-0.1            Be  0.0001-0.05
and at least one element from the group of alkali-earth metals:
                         K   0.0001-0.01
                         Na  0.0001-0.01
                         Ca  0.0001-0.01
                         Al-balance
the sum Zr+2Ti.ltoreq.0.3%, and the ratio Si:Be.gtoreq.2. The invented alloy is suitable for producing large-sized, extruded, rolled and forged semiproduct articles used for manufacture of loaded members of aircraft, cars and other machinery.

De uitvinding heeft op hoog sterktealuminium betrekking -- gebaseerde legering van Al -- Zn -- Mg -- het systeem van Cu en de daarvan gemaakte artikelen. De huidige legering wordt gekenmerkt door de combinatie betere eigenschappen: vloeibaarheid, technologische plasticiteit, breukhardheid terwijl het bewaren van hoge niveaus van sterkteeigenschappen. De bovengenoemde legering bestaat uit (Massachusetts %): Zn 6.35-8.0 Si 0.01-0.2 Mg 0.5-2.5 Fe 0.06-0.25 Cu 0.8-1.3 Zr 0.07-0.2 Cr 0.001-0.05 Ti 0.03-0.1 Mn 0.001-0.1 is 0.0001-0.05 en minstens één element van de groep alkali-aardemetalen: K 0.0001-0.01 Ca 0.0001-0.01 van Na 0.0001-0.01 al-Saldo som Zr+2Ti.ltoreq.0.3%, en de verhouding Si:Be.gtoreq.2. De uitgevonden legering is geschikt om grote, uitgedreven, gerolde en gesmede semiproduct artikelen te veroorzaken die voor vervaardiging van geladen leden van vliegtuigen, auto's en andere machines worden gebruikt.

 
Web www.patentalert.com

< Modified electrochemical hydrogen storage alloy having increased capacity, rate capability and catalytic activity

< Use of austenitic stainless steels in applications requiring anti-coking properties

> Process of forming a metallic article having a black oxide/ceramic surface and articles produced by the method

> Composition of matter tailoring: system I

~ 00110