Stanje i razvoj nekih kovkih aluminjskih legura specijalne i opće namjene

Aluminium is introduced into use in all industrial fields. Demands for lighter and stronger semi products and products are driving force for continuous improvement of standard alloys in regard of composition, properties, and manufacturing technologies. The competition with non-metallic materials demands further development of new aluminium alloys. The paper presents a short review of development of some aluminium wrought alloys intended mainly for rolled products. As the first group, Al-Li-X and super plastic alloys are described, both being used for specific purposes. The second group consists of alloys which were developed on the basis of standard alloys, and are intensively used for series products like wrapping and packing materials, and automobiles.Aluminij je uveden u sve industrijske oblasti. Zahtjevi za lakšim i jačim poluproizvodima i proizvodima pokretačka su snaga poboljšanja standardnih legura, glede sastava, svojstava i proizvodnih tehnologija. Natjecanje s nemetalnim materijalima zahtijeva daljnji razvoj novih aluminjskih legura. Članak predočuje kratki pregled razvoja nekih kovkih aluminjskih legura namijenjenih uglavnom za valjane proizvode. U prvoj su grupi opisani Al-Li-X i superplastične legure koje se koriste za posebne svrhe. Druga se grupa sastoji od legura razvijenih od standardnih legura i koje se intenzivno koriste za serijske ambalažne materijale i automobile